* {
    margin: 0;
    padding: 0;
    border: 0;
    font: inherit;
    outline: 0;
    box-sizing: border-box;
}

img {
    max-width: 100%;
}

html {
    width: 100%;
    height: 100%;
    font-size: 62.5%;
    background: #000;
}

.logo {
    width: 200px;
    height: auto;
    margin-top: 20px;
}

body {
    background-image: linear-gradient(rgba(0 0 0 / 70%),rgba(0 0 0 / 70%)), url('../images/bg.jpg');
    background-size: 100vh;
    background-position: center;
    background-repeat: no-repeat;
    font-family: 'arial', serif;
    width: 100%;
    height: 100%;
    text-align: center;
    
}

main {
    height: 100vh;
    display: grid;
    justify-items: center;
    align-content: center;
    grid-template-rows: auto 1fr;
}

.cobranding {
    font-size: 1.2rem;
    color: #fff;
    width: 100%;
    padding: 4vh;
}

.cta {
    display: grid;
    justify-items: center;
    align-content: center;
    grid-gap: 10px;
}

h1 {
    font-size: 2.2rem;
    color: #fff;
    text-decoration: underline;
}

.num {
    font-size: 1.4rem;
    color: #fff;
    width: 90%;
}

#submitBtn {
    font-size: 31px;
    padding: 22px;
    width:70%;
    color: #fff;
    margin: 3vh 0 10px 0;
    display: inline-block;
    text-decoration: none;
    border-radius: 8px;
}

.tarif {
    font-size: 1.2rem;
    color: #fff;
}

/*FOOTER*/
footer {
    display: grid;
    grid-gap: 4vh;
    padding: 4vh 0;
    background: #000;
}

    .subFooter {
        display: flex;
        justify-content: space-evenly;
    }

        .int {
            width: 10rem;
        }

        .synop {
            width: 2rem;
        }

    .menuFooter {
        display: grid;
        justify-items: center;
        width: 80%;
        margin: auto;
        grid-gap: 2vh;
    }

        footer a {
            color: #a5a5a5;
            text-decoration: none;
            font-size: 1.2rem;
            font-weight: 700;
            text-transform: capitalize;
            padding: 2vh;
        }

/* num trifi */
form {
    display: grid;
    justify-items: center;
    grid-gap: 2vh;
}

#submitBtn:disabled {
    background: linear-gradient(#ccc, #ccc);
    color: #666;
    box-shadow: none;
}

#submitBtn:enabled {
    background: #15509a;
    animation-name: button;
    animation-duration: 1s;
    animation-iteration-count: infinite;
}

@keyframes button{
    0%{color: rgba( 255, 255, 255, 0 );}
    50%{color: rgba( 255, 255, 255, 1 );}
    100%{color: rgba( 255, 255, 255, 0 );}
}

#enter {
    font-size: 1.4rem !important;
}

#phoneNumber{
    font-size: 3rem;
    border-radius: 50px;
    text-align: center;
    padding: 2vh 0;
    width: 75%;
    letter-spacing: 2px;
}
#phoneNumber::placeholder{
    color:lightgrey;
}
#phoneNumber:invalid{
    border: 5px solid red;
}
#phoneNumber:valid{
    border: 5px solid green;
}

#error{
    color: red;
    font-size: 1.6rem;
}

#mandatory_fr_lp_text {
    text-align: justify !important;
}