.menu {
    width: 100%;
    border-radius: 0;
    overflow: hidden;
}
.menu a{
  color: #ffffff;
}

.item {
    border-top: 1px solid #ffffff;
    overflow: hidden;
}

.btn {
    display: block;
    padding: 16px 20px;
    background: #ac1f2d;
    color: white;
    position: relative;
}
.expand::after {
    content: "+";
    color: #ffffff;
    position: absolute;
    width: 14px;
    height: 14px;

    right: 20px;
   
    transform: rotate(0deg);
}

.btn::before {
    content: "";
    position: absolute;
    width: 14px;
    height: 14px;
    background: #ac1f2d;
    left: 20px;
    bottom: -7px;
    transform: rotate(45deg);
}

.btn i {
    margin-right: 10px;
}

.smenu {
    background: #333;
    overflow: hidden;
    transition: max-height 0.3s;
    max-height: 0;
}

.smenu a {
   font-family: 'Playfair Display', serif; 
    font-size: 16px;
    display: block;
    padding: 3px 30px;
    color: white;
    margin: 9px 0;
    position: relative;
}

.smenu a::before {
    content: "";
    position: absolute;
    width: 3px;
    height: 100%;
    background: #ffffff;
    left: 0;
    top: 0;
    transition: .3s;
    opacity: 0;
}

.smenu a:hover::before {
    opacity: 1;
}

.item:target .smenu {
    max-height: 1600px;
}