:root{
    --color-white:white;
    --color-darkblue: blue;
    --color-darkblue-alpha:rgb(1, 1, 29);
    --color-green:green;

}
*,
*::before,
*::after{
    box-sizing: border-box;
}
body{
    font-family: sans-serif;
    font-size:1rem;
    font-weight: 400;
    line-height: 1.4;
    color:var(--color-white);
    margin:0;
}
/*mobile friendly alternative to using background-attachment:fixed*/
body::before{
    content: ' ';
    position:fixed;
    top:0;
    left:0;
    height:100%;
    width:100%;
    z-index: -1;
    background: var(--color-darkblue);
    background-image:
    linear-gradient(115deg,rgba(58,58,158,0.8),rgba(136,136,206,0.7)),
    url();
    background-size: cover;
    background-repeat: no-repeat;
    background-position: center;
}

h1{
    font-weight: 400;
    line-height: 1.2;

}
p{
    font-size: 1.125rem;
}
h1,p{
    margin-top: 0;
    margin-bottom: 0.5rem;

}
label{
    display: flex;
    align-items: center;
    font-size: 1.125rem;
    margin-bottom: 0.5rem;
}
input,button,select,textarea{
    margin: 0;
    font-family: inherit;
    font-size: inherit;

}
botton{
    border: none;
}
.container{
    width:100%;
    margin: 3.125rem auto 0 auto;
}

@media (min-width: 576px){
    .container{
        max-width: 540px;
    }
}

@media (min-width: 768px){
.container{
    max-width: 720px;
}
}
.header{
    padding: 0 0.625rem;
     margin-bottom:1.875rem;
}
.description{
    font-style: italic;
    font-weight: 200;
    text-shadow: 1px 1px 1px rgba(0,0,0,0.4);

}
.clue{
    margin-left: 0.25rem;
    font-size: 0.9rem;
    color:white;
}
.text-center{
    text-align: center;
}
/*form*/
form{
    background: var(--color-darkblue-alpha);
    padding: 2.5rem 0.625rem;
    border-radius: .025rem;
}
@media (min-width:480px){
    form{
        padding:2.5rem;
    }
}
.form_group{
    margin:0 auto 1.25rem auto;
    padding:0.25rem;

}
.form_control{
    display:block;
    width:100%;
    height:2.375rem;
    padding:0.375rem 0.75rem;
    color:gray;
    background-color: white;
    background-clip: padding-box;
    border: 1px solid rgb(165, 164, 164);
    border-radius: 0.25rem;
    transition: border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
}
.form_control:focus{
    border-color: skyblue;
    outline:0;
    box-shadow: 0 0 0 0.2rem rgba(0,123,255,0.25);
}
.input_radio,
input_checkbox{
display:inline-block;
margin-right: 0.625rem;
min-height: 1.25rem;
min-height: 1.25rem;
}
.input_textarea {
min-height: 120px;
width:100%;
padding:0.625rem;
resize: vertical;

}
.submit_button{
    display:block;
    width:100%;
    padding :0.75rem;
    background: var(--color-green);
    color:inherit;
}