rem.css

.userC{
    position: fixed;
    left: 0px;
    bottom: 0px;
    width: 100%;
    height: 50px;
    border-radius: 5px;
    background-color: rgba(255, 255, 255, .15);
    backdrop-filter: blur(5px);
    color: white;
    text-align: left;
    font-size: 40px;
    font-family: 'Amatic SC', cursive;
    }
#profileDisplay { display: block; height: 200px; width: 200px; margin: 0px auto; border-radius: 50%; }
.img-placeholder {
  width: 200px;
  color: white;
  height: 200px;
  background: black;
  opacity: 0.6;
  border-radius: 50%;
  z-index: 2;
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  display: none;
}
.img-placeholder h4 {
  margin-top: 40%;
  color: white;
}
.img-div:hover .img-placeholder {
  display: block;
  cursor: pointer;
}
    .signup_box{
        width: 30rem;
     height: 45rem;
     box-shadow: 0 0 1rem 0 rgba(0, 0, 0, .2);   
     border-radius: 5px;
     background-color: rgba(255, 255, 255, .15);
     backdrop-filter: blur(5px);
      
      }
      .profile-detail{
        font-size: 30px; 
        font-family: 'Arial', cursive;
        color:white;
      }
     
      
      ::placeholder{
        opacity: 0.6;
        font: Comic sans MS;
        font-size: medium;
        align-content: center;
      }