div#stockalert {
    background: #024089;
    border-radius: 10px; 
    padding: 45px 20px 270px 20px;
    position: relative;
    margin-top:80px;
}

div#stockalert input, 
div#stockalert select, 
div#stockalert button {
    border: none;
    border-radius: 50px;
    height: 60px;
    margin-top: 5px;
    padding: 10px;
    width: 100%;
}

div#stockalert .img-feuille-alerte-stock,
div#stockalert .img-roues-alerte-stock {
    position: absolute;
}

div#stockalert input, 
div#stockalert select,
div#stockalert input::placeholder, 
div#stockalert select::placeholder {
    color: #999999;
}

div#stockalert button {
    background: #5FAF4B;
    color: #FFF;
    cursor: pointer;
    opacity: 1;
    text-align: center;
    transition: 0.5s;
}

div#stockalert button:hover {
    opacity: 0.8;
    transition: 0.5s;
}

#stockalert h3 {
    font-size: 15px;
}
#stockalert h1,
#stockalert h3 {
    color: #FFF;
}

#stockalert-form,
#stockalert h1,
#stockalert h3 {
    position: relative;
    z-index:10;
}

#stockalert-form section:nth-child(1),
#stockalert-form section:nth-child(2) {
    width: 100%;
}

.img-feuille-alerte-stock {
    display: none;
}

@media screen and (max-width: 992px) {
    .img-roues-alerte-stock {
        bottom: -80px;
        height: 367px;
        left: 50%;
        transform: translateX(-50%);
        width: 367px;
    }
}

@media screen and (min-width: 992px) {
    div#stockalert {
        padding: 20px 300px 100px 280px;
        margin-top: 200px;
    }

    #stockalert-form section:nth-child(1) {
        width: 60%;
    }

    #stockalert-form section:nth-child(2) {
        width: 38%;
    }

    .img-feuille-alerte-stock {
        bottom: 0;
        display: block;
        left: 133px;
        z-index: 1;
    }

    .img-roues-alerte-stock {
        height: 484px;
        right: 10px;
        top: -50px;
    }
}

@media screen and (min-width: 1200px) {
    div#stockalert {
        padding: 20px 500px 100px 280px;
    }
}

@media screen and (min-width: 1600px) {
    div#stockalert {
        padding: 20px 700px 100px 280px;
    }

    .img-roues-alerte-stock {
        height: 554px;
        right: 133px;
        top: -50px;
        width: 554px;
        z-index: 1;
    }
}

#stockalert-form section label {
    width: 100%;
}

.select-custom {
    position: relative;
}

.select-custom select {
    -webkit-appearance: none;
    -moz-appearance: none;
    -ms-appearance: none;
    appearance: none;
}

.select-custom:after {
    border-style: solid;
    border-width: 0.15em 0.15em 0 0;
    bottom: 26px;
    color: #999;
    content: '';
    display: inline-block;
    height: 0.75em;
    position: absolute;
    right: 20px;
    transform: rotate(135deg);
    width: 0.75em;
}

div#stockalert input, div#stockalert select, div#stockalert button {
    padding: 10px 20px;
}