style.css

body{
 margin: 0;
}
.e-box{
  text-align: center;
  position: absolute;
  top: 20%;
  left: 50%;
  transform: translate(-50%,-50%);
  height: 200px;
  width: 320px;
  background-color: #EBECFF;
  border-radius: 3px;
  box-shadow: 0 0 1px 0 black;
}
.e-box span{
  text-align: center;
  font-size: 30px;
  color: #4680ff;
}
.e-box .e-sh{
  height: 40;
  width: 95%;
  border: 1px solid #4680ff;
  border-radius: 5px;
}
.e-box .e-sh input[type="email"]{
  height: 40px;
  width: 240px;
  text-align: center;
  outline: none;
 border: none;
 background-color: #FF960D00;
 color: #4680ff;
}
.e-box .e-sh input[type="email"]::placeholder{
  color: #4680ff;
}
.e-box .e-sh .bi-envelope{
  position: relative;
  top: 5px;
  font-size: 30px;
  color: #4680ff;
}
.btn{
  height: 45px;
  position: relative;
  top: 10px;
  background-color: #FF960D00;
  color: #4680ff;
  cursor: pointer;
  transition: all 0.3s;
}
.btn:hover{
  background-color: #4680ff;
  color:#fff;
}
.btn i{
 font-size: 20px;
}
.user span{
  color: #4680ff;
}
.user{
  display: none;
}