<button class="cp_button10">button</button>

.cp_button10 {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  width: 160px;
  padding: 1em;
  cursor: pointer;
  color: #ffffff;
  background: #FFB300;
  border: 1px solid #FFB300;
  border-radius: 0.25rem;
  overflow: hidden;
}
.cp_button10:after {
  position: absolute;
  display: block;
  content: '';
  margin-bottom: -100%;
  margin-left: -120%;
  padding-top: 240%;
  padding-left: 240%;
  border-radius: 50%;
  background: rgba(255,255,255,0.3);
  transition: all 1s;
  opacity: 0;
}
.cp_button10:hover {
  color: #ffffff;
  border-color: #FF8F00;
  background-color: #FF8F00;
}
.cp_button10:active:after {
  margin-top: 0;
  margin-left: 0;
  padding-top: 0;
  padding-left: 0;
  transition: 0s;
  opacity: 1;
}
.cp_button10:focus {
  color: #ffffff;
  border: 1px solid #FFB300;
}