registration.css

body {
    margin: 0;
    padding-bottom: 20px;
    font-family: 'Nunito', sans-serif;
    color: rgb(255, 255, 255);
    background-color: rgb(255, 255, 255);
}

.wrapper {
    background-color: #080808;
    position:relative;
    width: 30%;
    margin: 50px auto;
    padding: 20px;
    border-radius: 10px;
    box-shadow: rgba(50, 50, 93, 0.25) 0px 13px 27px -5px, rgba(0, 0, 0, 0.3) 0px 8px 16px -8px;
}

.header {
    position: relative;
    text-align: center;
}

.header h2 {
    color: #fff;
}

.form {
    margin: 0 auto;
    max-width: 16rem;
    overflow: auto;
}

.form-control {
    margin-bottom: 10px;
    padding-bottom: 20px;
    position: relative;
}

.form-control input {
    border: 1px solid transparent;
    border-bottom-color: rgb(255, 255, 255);
    background-color: transparent;
    color: rgb(7, 7, 7);
    border-radius: 0;
    font-family: inherit;
    font-size: 14px;
    padding: 10px;
    width: 100%;
}

.form-control input:focus {
    outline: 0;
    border-bottom-color: #777;
}

.form-control.success input {
    border-bottom-color: #2ecc71;
}

.form-control.error input {
    border-bottom-color: #e74c3c;
}

.form-control i {
    visibility: hidden;
    position: absolute;
    top: 40px;
    right: 10px;
}

.form-control.success i.fa-check-circle {
    color: #2ecc71;
    visibility: visible;
}

.form-control.error i.fa-times-circle {
    color: #e74c3c;
    visibility: visible;
}

.form-control small {
    color: #e74c3c;
    position: absolute;
    bottom: 0;
    left: 0;
    visibility: hidden;
}

.form-control.error small {
    visibility: visible;
}

.form button {
    background-image: linear-gradient(270deg, #08AEEA 0%, #2AF598 100%);
    border-radius: 15px;
    color: #000;
    font-size: 1rem;
    padding: 10px;
    margin-top: 20px;
    width: 100%;
}

.form-control button:focus {
    outline: 0;
    border-bottom-color: #777;
}

.credit {
    text-align: center;
    color: #000;
    font-family: 'Trebuchet MS', 'Lucida Sans Unicode', 'Lucida Grande', 'Lucida Sans', Arial, sans-serif;
}

.credit a {
    text-decoration: none;
    color: #000;
    font-weight: bold;
}



/* header */
header {
    justify-content: space-between;
}

ul.navbar {

    list-style-type: none;
    display: flex;
    align-items: center;
    margin: 0;
    padding: 0;
    background-color: #333;
    overflow: hidden;
    float: right;
}

ul.navbar li a {
    display: flex;
    color: white;
    margin-right: 100;
    padding: 10px 16px;
    text-decoration: none;
}

ul.navbar li a:hover:not(.active) {
    background-color: #f00a0a;
}