html,
body {
    height: 100%;
    background: linear-gradient(135deg, rgb(15, 82, 75) 0%, rgb(15, 82, 75) 15%,rgb(19, 103, 95) 15%, rgb(19, 103, 95) 47%,rgb(26, 146, 134) 47%, rgb(26, 146, 134) 76%,rgb(34, 190, 174) 76%, rgb(34, 190, 174) 92%,rgb(57, 218, 202) 92%, rgb(57, 218, 202) 100%);
}

body {
    display: -ms-flexbox;
    display: flex;
    text-shadow: 0 .05rem .1rem rgba(0, 0, 0, .5);
    box-shadow: inset 0 0 5rem rgba(0, 0, 0, .5);
}

.form-signin {
    max-width: 450px;
    padding: 1rem;
}

.form-signin .form-floating:focus-within {
    z-index: 2;
}

.form-signin input[name="username"] {
    margin-bottom: -1px;
    border-bottom-right-radius: 0;
    border-bottom-left-radius: 0;
}

.form-signin input[type="password"] {
    margin-bottom: 10px;
    border-top-left-radius: 0;
    border-top-right-radius: 0;
}