I’m using CSS to set all of the icons to be 30×30 pixels, and the Telegram icon is the only one that is the wrong size. The HTML source has the SVGs included.

.icon {
  color: black;
  text-align: center;
  display: inline;
  vertical-align: middle;
}

.share-buttons {
  background: #ccc;
  margin: 25px 0;
  padding: 8px 0;
  border-radius: 8px;
  display: flex;
  gap: 8px;
  justify-content: center;
}

.share-buttons a {
  background-color: #aaa;
  padding: 4px;
  border-radius: 8px;
}

.share-buttons svg {
  width: 32px;
  height: 32px;
}
<div class="share-buttons">
  <a class="twitter-share" target="_blank" rel="noopener" href="https://twitter.com/intent/tweet?url=http%3a%2f%2flocalhost%3a1313%2fblog%2fblog-post-newsletter%2f&amp;text=Newsletter%20for%20my%20blog%20posts&amp;via=bbaovanc"><svg class="icon" xmlns="http://www.w3.org/2000/svg" viewBox="-2 -4 24 24" width="24" height="24" fill="currentColor"><path d="M20 1.907a8.292 8.292 0 0 1-2.356.637A4.07 4.07 0 0 0 19.448.31a8.349 8.349 0 0 1-2.607.98A4.12 4.12 0 0 0 13.846.015c-2.266 0-4.103 1.81-4.103 4.04 0 .316.036.625.106.92A11.708 11.708 0 0 1 1.393.754a3.964 3.964 0 0 0-.554 2.03 4.02 4.02 0 0 0 1.824 3.363A4.151 4.151 0 0 1 .805 5.64v.05c0 1.958 1.415 3.591 3.29 3.963a4.216 4.216 0 0 1-1.08.141c-.265 0-.522-.025-.773-.075a4.098 4.098 0 0 0 3.832 2.807 8.312 8.312 0 0 1-5.095 1.727c-.332 0-.658-.02-.979-.056a11.727 11.727 0 0 0 6.289 1.818c7.547 0 11.673-6.157 11.673-11.496l-.014-.523A8.126 8.126 0 0 0 20 1.907z"></path><title>twitter icon</title></svg></a>

  <a class="facebook-share" target="_blank" rel="noopener" href="https://www.facebook.com/sharer.php?u=http%3a%2f%2flocalhost%3a1313%2fblog%2fblog-post-newsletter%2f"><svg class="icon" xmlns="http://www.w3.org/2000/svg" viewBox="-7 -2 24 24" width="24" height="24" fill="currentColor"><path d="M2.046 3.865v2.748H.032v3.36h2.014v9.986H6.18V9.974h2.775s.26-1.611.386-3.373H6.197V4.303c0-.343.45-.805.896-.805h2.254V0H6.283c-4.34 0-4.237 3.363-4.237 3.865z"></path><title>facebook icon</title></svg></a>

  <a class="linkedin-share" target="_blank" rel="noopener" href="https://www.linkedin.com/sharing/share-offsite/?url=http%3a%2f%2flocalhost%3a1313%2fblog%2fblog-post-newsletter%2f"><svg class="icon" xmlns="http://www.w3.org/2000/svg" viewBox="-2 -2 24 24" width="24" height="24" fill="currentColor"><path d="M19.959 11.719v7.379h-4.278v-6.885c0-1.73-.619-2.91-2.167-2.91-1.182 0-1.886.796-2.195 1.565-.113.275-.142.658-.142 1.043v7.187h-4.28s.058-11.66 0-12.869h4.28v1.824l-.028.042h.028v-.042c.568-.875 1.583-2.126 3.856-2.126 2.815 0 4.926 1.84 4.926 5.792zM2.421.026C.958.026 0 .986 0 2.249c0 1.235.93 2.224 2.365 2.224h.028c1.493 0 2.42-.989 2.42-2.224C4.787.986 3.887.026 2.422.026zM.254 19.098h4.278V6.229H.254v12.869z"></path><title>linkedin icon</title></svg></a>

  <a class="reddit-share" target="_blank" rel="noopener" href="https://reddit.com/submit?url=http%3a%2f%2flocalhost%3a1313%2fblog%2fblog-post-newsletter%2f&amp;title=Newsletter%20for%20my%20blog%20posts"><svg class="icon" xmlns="http://www.w3.org/2000/svg" viewBox="-2 -3 24 24" width="24" height="24" fill="currentColor"><path d="M19.986 8.029a2.51 2.51 0 0 0-4.285-1.771c-1.404-.906-3.197-1.483-5.166-1.573a2.734 2.734 0 0 1 1.028-2.139 2.735 2.735 0 0 1 2.315-.539l.112.025c0 .028-.004.056-.004.084a2.095 2.095 0 1 0 .328-1.121L14.113.95a3.812 3.812 0 0 0-3.228.752 3.812 3.812 0 0 0-1.433 2.983c-1.97.09-3.762.667-5.165 1.572a2.51 2.51 0 1 0-2.94 3.994c-.061.31-.093.628-.093.952 0 3.606 3.912 6.53 8.74 6.53 4.826 0 8.739-2.924 8.739-6.53 0-.324-.032-.641-.093-.952a2.508 2.508 0 0 0 1.346-2.222zm-3.905-6.925a1.013 1.013 0 0 1 0 2.025 1.013 1.013 0 0 1 0-2.025zM1.083 8.03c0-.787.64-1.427 1.427-1.427.337 0 .646.118.89.314-.763.655-1.354 1.425-1.721 2.27a1.423 1.423 0 0 1-.596-1.157zm14.442 6.923c-1.465 1.095-3.43 1.698-5.532 1.698s-4.067-.603-5.531-1.698c-1.37-1.023-2.125-2.355-2.125-3.75 0-1.394.754-2.725 2.125-3.75C5.926 6.359 7.89 5.757 9.993 5.757c2.103 0 4.067.602 5.532 1.697 1.37 1.024 2.125 2.355 2.125 3.75 0 1.394-.755 2.726-2.125 3.75zm2.782-5.767c-.367-.845-.958-1.614-1.721-2.269.244-.196.554-.314.89-.314.787 0 1.427.64 1.427 1.427 0 .476-.235.898-.596 1.156z"></path><circle cx="6.801" cy="9.678" r="1.143"></circle><circle cx="13.185" cy="9.678" r="1.143"></circle><path d="M12.701 12.455a4.357 4.357 0 0 1-2.94 1.138 4.325 4.325 0 0 1-3.195-1.39.541.541 0 1 0-.793.738 5.47 5.47 0 0 0 3.988 1.735 5.437 5.437 0 0 0 3.67-1.421.541.541 0 1 0-.73-.8z"></path><title>reddit icon</title></svg></a>

  <a class="telegram-share" target="_blank" rel="noopener" href="https://t.me/share/url?url=http%3a%2f%2flocalhost%3a1313%2fblog%2fblog-post-newsletter%2f&amp;text=Newsletter%20for%20my%20blog%20posts"><svg class="icon" width="20" height="20" xmlns="http://www.w3.org/2000/svg" fill="currentColor"><path d="M10 0c5.523 0 10 4.477 10 10s-4.477 10-10 10S0 15.523 0 10 4.477 0 10 0Zm4.442 6c-.381.007-.966.207-3.779 1.362a485.41 485.41 0 0 0-5.907 2.512c-.48.189-.73.373-.753.553-.044.346.46.453 1.094.657.517.166 1.213.36 1.575.368.328.007.694-.127 1.098-.4 2.76-1.84 4.183-2.769 4.273-2.789.063-.014.15-.032.21.02.059.052.053.15.046.177-.05.211-2.641 2.538-2.79 2.691l-.072.072c-.55.543-1.105.898-.147 1.521.866.563 1.37.922 2.26 1.5.57.368 1.017.805 1.605.752.271-.025.55-.276.693-1.026.335-1.77.995-5.608 1.147-7.19a1.742 1.742 0 0 0-.017-.393.42.42 0 0 0-.144-.27c-.121-.098-.309-.118-.392-.117Z"></path><title>telegram icon</title></svg></a>
</div>

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2

because your svg telegram is not the same width and height and viewbox. Let me know if this is good.

.icon {
  color: black;
  text-align: center;
  display: inline;
  vertical-align: middle;
}

.share-buttons {
  background: #ccc;
  margin: 25px 0;
  padding: 8px 0;
  border-radius: 8px;
  display: flex;
  gap: 8px;
  justify-content: center;
}

.share-buttons a {
  background-color: #aaa;
  padding: 4px;
  border-radius: 8px;
}

.share-buttons svg {
  width: 32px;
  height: 32px;
}
<div class="share-buttons">
  <a class="twitter-share" target="_blank" rel="noopener" href="https://twitter.com/intent/tweet?url=http%3a%2f%2flocalhost%3a1313%2fblog%2fblog-post-newsletter%2f&amp;text=Newsletter%20for%20my%20blog%20posts&amp;via=bbaovanc"><svg class="icon" xmlns="http://www.w3.org/2000/svg" viewBox="-2 -4 24 24" width="24" height="24" fill="currentColor"><path d="M20 1.907a8.292 8.292 0 0 1-2.356.637A4.07 4.07 0 0 0 19.448.31a8.349 8.349 0 0 1-2.607.98A4.12 4.12 0 0 0 13.846.015c-2.266 0-4.103 1.81-4.103 4.04 0 .316.036.625.106.92A11.708 11.708 0 0 1 1.393.754a3.964 3.964 0 0 0-.554 2.03 4.02 4.02 0 0 0 1.824 3.363A4.151 4.151 0 0 1 .805 5.64v.05c0 1.958 1.415 3.591 3.29 3.963a4.216 4.216 0 0 1-1.08.141c-.265 0-.522-.025-.773-.075a4.098 4.098 0 0 0 3.832 2.807 8.312 8.312 0 0 1-5.095 1.727c-.332 0-.658-.02-.979-.056a11.727 11.727 0 0 0 6.289 1.818c7.547 0 11.673-6.157 11.673-11.496l-.014-.523A8.126 8.126 0 0 0 20 1.907z"></path><title>twitter icon</title></svg></a>

  <a class="facebook-share" target="_blank" rel="noopener" href="https://www.facebook.com/sharer.php?u=http%3a%2f%2flocalhost%3a1313%2fblog%2fblog-post-newsletter%2f"><svg class="icon" xmlns="http://www.w3.org/2000/svg" viewBox="-7 -2 24 24" width="24" height="24" fill="currentColor"><path d="M2.046 3.865v2.748H.032v3.36h2.014v9.986H6.18V9.974h2.775s.26-1.611.386-3.373H6.197V4.303c0-.343.45-.805.896-.805h2.254V0H6.283c-4.34 0-4.237 3.363-4.237 3.865z"></path><title>facebook icon</title></svg></a>

  <a class="linkedin-share" target="_blank" rel="noopener" href="https://www.linkedin.com/sharing/share-offsite/?url=http%3a%2f%2flocalhost%3a1313%2fblog%2fblog-post-newsletter%2f"><svg class="icon" xmlns="http://www.w3.org/2000/svg" viewBox="-2 -2 24 24" width="24" height="24" fill="currentColor"><path d="M19.959 11.719v7.379h-4.278v-6.885c0-1.73-.619-2.91-2.167-2.91-1.182 0-1.886.796-2.195 1.565-.113.275-.142.658-.142 1.043v7.187h-4.28s.058-11.66 0-12.869h4.28v1.824l-.028.042h.028v-.042c.568-.875 1.583-2.126 3.856-2.126 2.815 0 4.926 1.84 4.926 5.792zM2.421.026C.958.026 0 .986 0 2.249c0 1.235.93 2.224 2.365 2.224h.028c1.493 0 2.42-.989 2.42-2.224C4.787.986 3.887.026 2.422.026zM.254 19.098h4.278V6.229H.254v12.869z"></path><title>linkedin icon</title></svg></a>

  <a class="reddit-share" target="_blank" rel="noopener" href="https://reddit.com/submit?url=http%3a%2f%2flocalhost%3a1313%2fblog%2fblog-post-newsletter%2f&amp;title=Newsletter%20for%20my%20blog%20posts"><svg class="icon" xmlns="http://www.w3.org/2000/svg" viewBox="-2 -3 24 24" width="24" height="24" fill="currentColor"><path d="M19.986 8.029a2.51 2.51 0 0 0-4.285-1.771c-1.404-.906-3.197-1.483-5.166-1.573a2.734 2.734 0 0 1 1.028-2.139 2.735 2.735 0 0 1 2.315-.539l.112.025c0 .028-.004.056-.004.084a2.095 2.095 0 1 0 .328-1.121L14.113.95a3.812 3.812 0 0 0-3.228.752 3.812 3.812 0 0 0-1.433 2.983c-1.97.09-3.762.667-5.165 1.572a2.51 2.51 0 1 0-2.94 3.994c-.061.31-.093.628-.093.952 0 3.606 3.912 6.53 8.74 6.53 4.826 0 8.739-2.924 8.739-6.53 0-.324-.032-.641-.093-.952a2.508 2.508 0 0 0 1.346-2.222zm-3.905-6.925a1.013 1.013 0 0 1 0 2.025 1.013 1.013 0 0 1 0-2.025zM1.083 8.03c0-.787.64-1.427 1.427-1.427.337 0 .646.118.89.314-.763.655-1.354 1.425-1.721 2.27a1.423 1.423 0 0 1-.596-1.157zm14.442 6.923c-1.465 1.095-3.43 1.698-5.532 1.698s-4.067-.603-5.531-1.698c-1.37-1.023-2.125-2.355-2.125-3.75 0-1.394.754-2.725 2.125-3.75C5.926 6.359 7.89 5.757 9.993 5.757c2.103 0 4.067.602 5.532 1.697 1.37 1.024 2.125 2.355 2.125 3.75 0 1.394-.755 2.726-2.125 3.75zm2.782-5.767c-.367-.845-.958-1.614-1.721-2.269.244-.196.554-.314.89-.314.787 0 1.427.64 1.427 1.427 0 .476-.235.898-.596 1.156z"></path><circle cx="6.801" cy="9.678" r="1.143"></circle><circle cx="13.185" cy="9.678" r="1.143"></circle><path d="M12.701 12.455a4.357 4.357 0 0 1-2.94 1.138 4.325 4.325 0 0 1-3.195-1.39.541.541 0 1 0-.793.738 5.47 5.47 0 0 0 3.988 1.735 5.437 5.437 0 0 0 3.67-1.421.541.541 0 1 0-.73-.8z"></path><title>reddit icon</title></svg></a>

  <a class="telegram-share" target="_blank" rel="noopener" href="https://t.me/share/url?url=http%3a%2f%2flocalhost%3a1313%2fblog%2fblog-post-newsletter%2f&amp;text=Newsletter%20for%20my%20blog%20posts"><svg class="icon"   xmlns="http://www.w3.org/2000/svg" viewBox="-2 -3 24 24" width="24" height="24" fill="currentColor" ><path d="M10 0c5.523 0 10 4.477 10 10s-4.477 10-10 10S0 15.523 0 10 4.477 0 10 0Zm4.442 6c-.381.007-.966.207-3.779 1.362a485.41 485.41 0 0 0-5.907 2.512c-.48.189-.73.373-.753.553-.044.346.46.453 1.094.657.517.166 1.213.36 1.575.368.328.007.694-.127 1.098-.4 2.76-1.84 4.183-2.769 4.273-2.789.063-.014.15-.032.21.02.059.052.053.15.046.177-.05.211-2.641 2.538-2.79 2.691l-.072.072c-.55.543-1.105.898-.147 1.521.866.563 1.37.922 2.26 1.5.57.368 1.017.805 1.605.752.271-.025.55-.276.693-1.026.335-1.77.995-5.608 1.147-7.19a1.742 1.742 0 0 0-.017-.393.42.42 0 0 0-.144-.27c-.121-.098-.309-.118-.392-.117Z"></path><title>telegram icon</title></svg></a>
</div>

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