<body class="h-100">
  <div class="container">
    <div class="buttons-grid">
      <div class="buttons-grid-item">
        <button class="gradient-button">
          Button
        </button>
      </div>
      <div class="buttons-grid-item">
        <button class="gradient-button gradient-button-1">
          Button
        </button>
      </div>
      <div class="buttons-grid-item">
        <button class="gradient-button gradient-button-2">
          Button
        </button>
      </div>
      <div class="buttons-grid-item">
        <button class="gradient-button gradient-button-3">
          Button
        </button>
      </div>
      <div class="buttons-grid-item">
        <button class="gradient-button gradient-button-4">
          Button
        </button>
      </div>
      <div class="buttons-grid-item">
        <button class="gradient-button gradient-button-5">
          Button
        </button>
      </div>
      <div class="buttons-grid-item">
        <button class="gradient-button gradient-button-6">
          Button
        </button>
      </div>
      <div class="buttons-grid-item">
        <button class="gradient-button gradient-button-7">
          Button
        </button>
      </div>
    </div>
  </div>
</body>
.h-100 {
  height: 100%;
}

*,
*:before,
*:after {
  box-sizing: border-box;
}

body {
  margin: 0;
}

.container {
  background: #efefef;
  min-height: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
}

.buttons-grid {
  width: 80%;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  grid-column-gap: 20px;
  grid-row-gap: 40px;
}

.buttons-grid-item {
  display: flex;
  justify-content: center;
}

.gradient-button {
  background-color: transparent;
  --color-from: #444;
  --color-to: #888;
  background-image: linear-gradient(
    to right,
    var(--color-from),
    var(--color-to)
  );
  background-blend-mode: overlay;
  color: #fff;
  border: none;
  outline: 0 !important;
  border-radius: 6px;
  padding: 12px 30px;
  font-size: 16px;
  font-family: "Gudea", sans-serif;
  box-shadow: 4px 6px 30px 0 rgba(0, 0, 0, 0.2);
  transition: all 0.2s ease-in;
}

.gradient-button:hover,
.gradient-button:focus {
  background-color: rgba(80, 80, 80, 0.4);
}

.gradient-button-1 {
  --color-from: #e052a0;
  --color-to: #f15c41;
}

.gradient-button-2 {
  --color-from: #8e92a7;
  --color-to: #004e92;
}

.gradient-button-3 {
  --color-from: #00d2ff;
  --color-to: #928dab;
}

.gradient-button-4 {
  --color-from: #42275a;
  --color-to: #734b6d;
}

.gradient-button-5 {
  --color-from: #000;
  --color-to: #734b6d;
}

.gradient-button-6 {
  --color-from: #834d9b;
  --color-to: #d04ed6;
}

.gradient-button-7 {
  color: #165895;
  --color-from: #a1c4fd;
  --color-to: #c2e9fb;
}

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