.btn {
  box-sizing: border-box;
  -webkit-appearance: none;
     -moz-appearance: none;
          appearance: none;
  background-color: transparent;
  border: 2px solid #fff;
  color: #fff;
  cursor: pointer;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -ms-flex-item-align: center;
      align-self: center;
  font-size: 15px;
  font-weight: 400;
  line-height: 1;
  margin: 20px auto;
  padding: 10px 25px;
  text-decoration: none;
  text-align: center;
}
.btn:hover, .btn:focus {
  color: #fff;
  outline: 0;
}
.fourth {
  border-color: #fff;
  color: #fff;
  background-image: -webkit-linear-gradient(45deg, #fff 50%, transparent 50%);
  background-image: linear-gradient(45deg, #fff 50%, transparent 50%);
  background-position: 100%;
  background-size: 400%;
  -webkit-transition: background 300ms ease-in-out;
  transition: background 300ms ease-in-out;
}
.fourth:hover {
  background-position: 0;
  color:#0f4379;
}

.fourths {
  border-color: #05aac4;
  color: #05aac4;
  background-image: -webkit-linear-gradient(45deg, #05aac4 50%, transparent 50%);
  background-image: linear-gradient(45deg, #05aac4 50%, transparent 50%);
  background-position: 100%;
  background-size: 400%;
  -webkit-transition: background 300ms ease-in-out;
  transition: background 300ms ease-in-out;
}
.fourths:hover {
  background-position: 0;
  color:#fff;
}

.f-left{
	float:left;
}