@-webkit-keyframes deslizar {
  from {width: 55px}
  to {width: 260px;}
}

/* Add animation (Standard syntax) */
@keyframes deslizar {
  from {width: 55px}
  to {width: 260px;}
}


@media (min-width: 750px){
    .menu_horiz {
        width: 100%;
        overflow: auto;
    }
}

@media (max-width: 750px){
    .menu_horiz{
        position: fixed;
        width: 0px;
        max-width: 258px;
        transition: width 0.5s;
        z-index: 999;
        height: -webkit-fill-available;
        background: #424242;
        top: 0px;
    }
}

.aside{
    overflow: auto;
}
    
.menu_horiz_min{
    /*transition: width 0.5s;*/
    width: 100%;
    z-index: 999;
    height: -webkit-fill-available;
    background: #424242;
}

@media (min-width: 750px){
    .menu_horiz_min span{
        display: none;
    }
}

@media (min-width: 750px){
    .menu_horiz_min:hover{
        position: absolute;
        width: 260px;
        /* Add animation */
        -webkit-animation-name: deslizar; /* Chrome, Safari, Opera */
        -webkit-animation-duration: 0.5s; /* Chrome, Safari, Opera */
        animation-name: deslizar;
        animation-duration: 0.5s;
        white-space: nowrap;
    }

    .menu_horiz_min:hover span{
        display: initial !important;
    }
}

.smenu_horiz i{
    font-size: 12px;
    margin: 7px 9px 7px 4px;
        
}

.menu_horiz ul{
    padding: 0px;
    margin: 0px;
}


.menu_horiz a{
    text-decoration: none;
    white-space: nowrap;
}


.item_horiz {
    border-top: 1px solid #252525;
    overflow: hidden;
}

.btn_horiz {
    display: block;
    padding: 16px 20px;
    background: #383838;
    color: white;
    position: relative;
}


.btn_horiz::before {
    content: "";
    position: absolute;
    width: 14px;
    height: 14px;
    background: #383838;
    left: 20px;
    bottom: -7px;
    transform: rotate(45deg);
}

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

.smenu_horiz {
    background: #4f4f4f;
    overflow: hidden;
    transition: max-height 0.5s;
    /*max-height: 0;*/
}

.smenu_horiz_max{
    display: block;
    height: auto;
    border-bottom: 1px solid #817e7e;
    padding: 8px 26px;
    transition: max-height 0.5s;
    color: white;
    margin: 1px 0;
    position: relative;
    transition: height 0.5s;
    transition: padding 0.5s;
}

.smenu_horiz_min{
    position: relative;
    display: block;
    height: 0px;
    border-bottom: hidden;
    padding: 0px;
    margin: 0;
    transition: height 0.5s;
    transition: padding 0.5s;
}
/*
.smenu_horiz div {
    display: block;
    padding: 16px 26px;
    color: white;
    margin: 1px 0;
    position: relative;
}
*/
.smenu_horiz div::before {
    content: "";
    position: absolute;
    width: 3px;
    height: 100%;
    background: #f4f4f4;
    left: 0;
    top: 0;
    transition: .5s;
    opacity: 0;
}

.smenu_horiz div:hover::before {
    opacity: 1;
}

/*
.item_horiz:target .smenu_horiz {
    max-height: 200em;
}
*/