<div class="hover-1" data="Text"></div>
<div class="hover-2" data="Text"></div>
<div class="hover-3" data="Text"></div>

body {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: row;
  height: 100vh;
  background: #eee;
}
div {
  margin: auto;
  width: 200px;
  padding: 20px;
  text-align: center;
  box-sizing: border-box;
}

// ここからhoverコード
.hover-1{
  position: relative;
  background: #fff;
  &::before{
    content: attr(data);
    display: block;
  }
  &::after{
    content: '';
    display: block;
    position: absolute;
    bottom: 0;
    left: 0;
    height: 5px;
    background-color: #333;
    transition: width 300ms;
    width: 0;
  }
  &:hover{
    &::after{
      width: 100%;
    }
  }
}

.hover-2{
  position: relative;
  background: #fff;
  &::before{
    content: attr(data);
    display: block;
  }
  &::after{
    content: '';
    display: block;
    position: absolute;
    bottom: 0;
    right: 0;
    height: 5px;
    background-color: #333;
    transition: width 300ms;
    width: 0;
  }
  &:hover{
    &::after{
      width: 100%;
      left: 0;
    }
  }
}

.hover-3{
  position: relative;
  background: #fff;
  &::before{
    content: attr(data);
    display: block;
  }
  &::after{
    content: '';
    display: block;
    position: absolute;
    bottom: 0;
    right: 0;
    left: 0;
    margin: auto;
    justify-content: center;
    height: 5px;
    background-color: #333;
    transition: width 300ms;
    width: 0;
  }
  &:hover{
    &::after{
      width: 100%;
    }
  }
}