<a href="#" class="gradebtn">MORE</a>
.gradebtn {
  display: block;
  border-bottom: 1px dotted #fff;
  padding: 7px 0;
  -webkit-transition: all 0.3s;
  -moz-transition: all 0.3s;
  -ms-transition: all 0.3s;
  -o-transition: all 0.3s;
  transition: all 0.3s;
  position: relative;
  width:150px;
  color:#f32;
  border:1px solid #f32;
  text-decoration:none;
  text-align:center;
}
.gradebtn:hover{
  color:#fff;
}
.gradebtn::after {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  content: '';
  margin: auto;
  width: 100%;
  height: 40px;
  background: rgb(243 2 0 / 40%);
  transform: scale(0, 1);
  transform-origin: right top;
  transition: transform .3s;
  z-index: -1;
}
.gradebtn:hover::after {
  transform: scale(1, 1);
}

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