*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: sans-serif;
    color: #fff;
}

.container{
    width: 100%;
    height: 100vh;
    background: url('wave-haikei.png') no-repeat;
    background-size: cover;
}

.box{
    width: 400px;
    position: relative;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    box-shadow: 2px 2px 5px #89c9f3, -2px -2px 5px #89c9f3;
    border-radius: 8px;
    backdrop-filter: blur(8px);
    padding: 20px 40px;
}

.signup-header h1{
    font-size: 2.2rem;
    text-align: center;
    padding: 5px 8px;
}

.signup-body p{
    margin-top: 20px;
    position: relative;
}
.signup-body p i{
    position: absolute;
    top: 34px;
    right: 16px;
    color: #008000;
    font-size: 22px;
}
.signup-body p span{
    font-size: 18px;
    font-weight: 600;
    color: #90ee90;
}
.signup-body p label{
    font-size: 18px;
    font-weight: 600; 
    cursor: pointer;
}

.signup-body p input{
    width: 100%;
    padding: 10px;
    border-radius: 4px;
    font-size: 18px;
    margin-block: 4px;
    border: none;
    outline: none;
    color: #000;
}

.signup-body p input[type="submit"]{
    border: none;
    background-color: #3498db;
    color: #fff;
    font-size: 20px;
    font-weight: 700;
    cursor: pointer;
}

.signup-body p input[type="submit"]:hover{
    background-color: #2773a5;
}

.signup-footer p{
    text-align: center;
    font-weight: 600;
    margin-top: 20px;
}

.signup-footer p a{
    text-decoration: none;
}
.signup-footer p a:hover{
    text-decoration: underline;
}