body {
    color: #4A4A4A;
    font-family: 'Open Sans';
    font-size: 14px;
    line-height: 20px;
    letter-spacing: .1px;
}

.strong { font-weight: 800; }
.fw-300 { font-weight:300; }
.fs16 { font-size: 16px; line-height:22px; }
.bg1 { background-color: #D2451E; }
.bg2 { background-color: #F4F4F4; }
.bg3 { background-color: #4A4A4A; }
.w100 { width:100%; }

#main {
    position: relative;
}
#main .visuel {
    background-image: url('../images/visuel_4x.jpg');
    background-repeat: no-repeat;
    background-size: contain;
    background-position: top;
    height: 33vw;
}
.args {
    align-items: first baseline;
    font-weight: 300;
    justify-content: space-evenly;
}
.args > .col-4 {
    background: linear-gradient(90deg, #F4F4F4 50%, #fff 50%);
    flex: 0 0 30%;
    max-width: 30%;
    padding: 20px;
}
.args b {
    font-weight: 600;
}

hr {
    border-top: 2px solid #d2451e;
    margin: 20px 0;
    text-align: left;
    width: 53px;
}

#accroche {
    color: white;
    left: 5%;
    position: absolute;
    top: 10%;
}

.form-control {
    border: none;
    border-bottom: 1px solid #aeaeae;
    border-radius: 0;
    font-size: 14px;
}
label {
    padding-left: 8px;
}

.form-control.invalid {
    background: pink;
    border-bottom: 2px solid red;
    color: red;
}

.btn {
    display: block;
    letter-spacing: 1px;
    margin: 0 auto;
    position: relative;
}
.btn {
    filter: drop-shadow(1px 2px 11px rgba(0, 0, 0, 0.18));
}

#mentions {
    font-family: Arial;
    font-size: 10px;
    line-height: 18px;
}



@media screen and (min-width: 1300px) {
    label {
        max-width: 70%;
        padding-left: 0px;
    }
}
@media screen and (max-width: 991px) {
    #main .visuel {
        background-image: url('../images/visuel_mobile_2x.jpg');
        min-height: 420px;
    }

    .form-container {
        margin: 0 auto;
        max-width: 420px;
    }
    
    .args > .col-4 {
        flex: 0 0 90%;
        margin: 12px 0;
        max-width: 90%;
        padding: 20px;
    }
    
    .args > .col-4:nth-child(2) {
        background: linear-gradient(90deg, #fff 50%, #F4F4F4 50%);
    }
}
@media screen and (max-width: 648px) {
    #main .visuel {
        height: 420px;
        min-height: 0;
    }
}