body{
  background: crimson;
  font-size: 20px;
  
}

a{
  color: crimson;
  text-decoration: none
}
a:hover{
  color:rgb(0, 0, 0);
  ;
}
input{
  width:15vw ;
  height:4vh ;
}
h1{
text-align: center;
}
.back {
  position: fixed;
  top: 20px;
  left: 30px;
  margin: 10px;
  border: 3px solid crimson;
  border-radius: 50%;
  background-color: crimson;
  width: 70px;
  height: 70px;
}
.sign-in {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 30%;
  height: 55%;
  border: 1px solid;
  background-color: rgb(255, 255, 255); 
  box-shadow: 0px 0px 18px 0px black; 
  color: crimson;
}
.sign-in-item{
 text-align: center;
 margin: 20px;
}


 button {
  width: 200px;
  height: 45px;
  font-size: 20px;
  border: 2px solid crimson;
  background-color: crimson;
  color: white;
}
button:hover {
  background-color: white;
  color: crimson;
}