* {
    color: rgb(56, 56, 56);
}
#header {
    padding: 20px 0;
    margin: 0;
    text-align: center;
    position: fixed;
    background: rgb(215, 234, 5);
    width: 100%;
    top: 0;
    left: 0;
    z-index: 10;
    height: 90px;
}
#header h1 {
    margin-bottom: 5px;
}
#container {
    max-width: 500px;
    margin: 0 auto;
    text-align: center;
    margin-top: 20px;
    padding: 25px;
    text-align: center;
}
p {
    margin-top: 150px;
    text-align: left;
}
#btn-install {
    background: rgb(215, 234, 5);
    border: 1px solid rgb(83, 83, 83);
    border-radius: 5px;
}
.spinner-btn {
    display: inline-block;
    width: 14px;
    height: 14px;
    border: 2px solid #fff;
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    vertical-align: middle;
}
/* Mobile */
@media (max-width: 768px) {}

/* PC / tablette */
@media (min-width: 769px) {}