body {
    margin: 0;
    padding: 0;
    background-color: #ffd061;
    height: 100vh;
    overflow: hidden;
}

.center {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 400px;
    background: #D9D9D9;
    border-radius: 10px;
}

.center h1 {
    text-align: center;
    padding: 0 0 20px 0;
   
}

.center form {
    padding: 0 40px;
    box-sizing: border-box;
}
.lo{
    display: flex;
    justify-content: center;
    border-bottom: 1px solid #013131;
}
img{
    padding: 8px;
    width: 60px;
    height: 50px;
}


form .text_field {
    position: relative;
    border-bottom: 2px solid #4E4E4E;
    margin: 30px 0;
}

.text_field input {
    width: 100%;
    padding: 0 5px;
    height: 40px;
    font-size: 16px;
    border: none;
    background: none;
    outline: none;
}
.text_field label{
    position: absolute;
    top: 50%;
    left: 35px;
    color: #4E4E4E;
    transform: translate(-50%);
    font-size: 16px;
    pointer-events: none;
    transition: .5s;
}

.text_field span::before{
    content: '';
    position: absolute;
    top: 40px;
    left: 0;
    width: 0%;
    height: 2px;
    background: #013131;
    transition: .5s;
}

.text_field input:focus ~ label ,
.text_field input:valid ~ label {
    top: -14px;
    color: #013131;
}

.text_field input:focus ~ span::before ,
.text_field input:valid ~ span::before {
  width: 100%;
}
input[type="submit"]{
  margin: 10px 0;
   width: 100%;
   height: 50px;
   border: 1px solid;
   background: #013131;
   border-radius: 25px;
   font-size: 18px;
   color: #e9f4fb;
   font-weight: 700;
   cursor: pointer;
   outline: none;
   
}

input[type="submit"]:hover{
    
  border-color: #013131;
  transition: .5s;
}
a{
    margin-top: 14px;
    margin-bottom: 5px;
    font-size: 14px;
    color: #000;
}
@media (max-width: 786px){
    .center{
       width: 350px; 
    }
}