<button type="submit">Click Me!</button>

@import url("https://fonts.googleapis.com/css2?family=Exo:wght@600&display=swap");

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  line-height: 1.5;
  font-size: 15px;
  font-weight: 400;
}

body {
  width: 100vw;
  min-height: 100vh;

  display: flex;
  justify-content: center;
  align-items: center;
  gap: 10px;

  font-family: "Exo", Arial, sans-serif;
  background-color: #151522;
  color: #fff;
}

button {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  padding: 12px 20px;
  cursor: pointer;
  user-select: none;
  transition: all 150ms linear;
  color: #fff;
  border: 0 none;
  border-radius: 10rem;
  font-size: 1.5rem;
  font-weight: 500;
  appearance: none;
  flex: 0 0 200px;
  box-shadow: 0px 5px 2px #e4e4e4;
  background-color: #416dea;
}

button:hover {
  transition: all 150ms linear;
  opacity: 0.85;
}

button:focus:not(:focus-visible) {
  outline: none;
  outline-offset: 2px;
  box-shadow: 0px 1px 1px #416dea;
}

button:focus-visible {
  outline: none;
  outline-offset: 2px;
  box-shadow: 0px 1px 1px #416dea;
}