Edit in JSFiddle

<div class="button01">アレンジ1</div>
<div class="button02">アレンジ2</div>
<div class="button03">アレンジ3</div>
<div class="button04">アレンジ4</div>

body {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  height: 100vh;
}

.button01 {
  display: inline-block;
  width: 200px;
  height: 54px;
  text-align: center;
  text-decoration: none;
  line-height: 54px;
  outline: none;
  background-color: #1C8BBD;
  border: 2px solid #066590;
  color: #fff;
  line-height: 50px;
  position: relative;
  z-index: 2;
  cursor: pointer;
}

.button01,
.button01::before {
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing: border-box;
  -webkit-transition: all .5s;
  transition: all .5s;
}

.button01::before {
  position: absolute;
  z-index: -1;
  display: block;
  content: '';
}

.button01::before {
  top: 0;
  width: 100%;
  height: 100%;
  background-color: #1C8BBD;
}

.button01::before {
  left: 0;
}

.button01:hover {
  background-color: #fff;
  border-color: #59b1eb;
  color: #59b1eb;
}

.button01:hover::before {
  width: 0;
  background-color: #59b1eb;
}


.button02 {
  display: inline-block;
  margin-top: 10px;
  width: 200px;
  height: 54px;
  text-align: center;
  text-decoration: none;
  line-height: 54px;
  outline: none;
  background-color: #1C8BBD;
  border: 2px solid #066590;
  color: #fff;
  line-height: 50px;
  position: relative;
  z-index: 2;
  cursor: pointer;
}

.button02,
.button02::before {
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing: border-box;
  -webkit-transition: all .5s;
  transition: all .5s;
}

.button02::before {
  position: absolute;
  z-index: -1;
  display: block;
  content: '';
}

.button02::before {
  top: 0;
  width: 100%;
  height: 100%;
  background-color: #1C8BBD;
}

.button02::before {
  right: 0;
}

.button02:hover {
  background-color: #fff;
  border-color: #59b1eb;
  color: #59b1eb;
}

.button02:hover::before {
  width: 0;
  background-color: #59b1eb;
}


.button03 {
  display: inline-block;
  margin-top: 10px;
  width: 200px;
  height: 54px;
  text-align: center;
  text-decoration: none;
  line-height: 54px;
  outline: none;
  background-color: #1C8BBD;
  border: 2px solid #066590;
  color: #fff;
  line-height: 50px;
  position: relative;
  z-index: 2;
  cursor: pointer;
}

.button03,
.button03::before,
.button03::after {
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing: border-box;
  -webkit-transition: all .5s;
  transition: all .5s;
}

.button03::before,
.button03::after {
  position: absolute;
  z-index: -1;
  display: block;
  content: '';
}

.button03::before {
  top: 0;
  width: 100%;
  height: 50%;
  background-color: #1C8BBD;
}

.button03::after {
  top: 25px;
  width: 100%;
  height: 50%;
  background-color: #1C8BBD;
}

.button03::before {
  left: 0;
}

.button03::after {
  right: 0;
}

.button03:hover {
  background-color: #fff;
  border-color: #59b1eb;
  color: #59b1eb;
}

.button03:hover::before,
.button03:hover::after {
  width: 0;
  background-color: #59b1eb;
}


.button04 {
  display: inline-block;
  margin-top: 10px;
  width: 200px;
  height: 54px;
  text-align: center;
  text-decoration: none;
  line-height: 54px;
  outline: none;
  background-color: #1C8BBD;
  border: 2px solid #066590;
  color: #fff;
  line-height: 50px;
  position: relative;
  z-index: 2;
  cursor: pointer;
}

.button04,
.button04::before {
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  -webkit-transition: ease-in .3s;
  transition: ease-in .3s;
}

.button04::before {
  position: absolute;
  z-index: -1;
  display: block;
  content: '';
}

.button04::before {
  bottom: 0;
  width: 0;
  height: 10%;
  background-color: #1C8BBD;
}

.button04::before {
  left: 0;
}

.button04:hover {
  background-color: #fff;
  color: #59b1eb;
}

.button04:hover::before,
.button04:hover::after {
  width: 100%;
  background-color: #066590;
}