.d-none{display:none}

.eff_spl.closed {
    background: #e0e0e0;
}

.eff_spl, .eff_tab_name{
    border-top-left-radius: 3px; /* Левый верхний уголок */
    border-top-right-radius: 3px; /* Правый верхний уголок */
}
.eff_spl{
padding: .5rem;
cursor: pointer;
background: #a1efff;
color: #000000;
}

.eff_spl:after{
transition: .5s all;
width: 0;
height: 0;
border-style: solid;
border-width: 0 9px 9px 9px;
border-color: transparent transparent #fff;
display: block;
content: "";
float: right;
margin: 5px;
}

.eff_spl.closed:after{
transform: rotate(180deg);
}

.eff_spl + div, .eff_tab_name, .tabcontent  {
    border: 1px solid #d4d4d4;
    padding: 1rem;
}

.tabnav{padding-bottom:0; margin-bottom:0}

.tabnav li{display:inline-block; list-style:none;}
.eff_tab_name, .eff_tab_name:hover, .eff_tab_name:focus{text-decoration:none;  outline: 0;}
.eff_tab_name{
display:block;
padding: .5rem 1rem;
border-bottom:0; background:#fff;
margin-bottom:-1px;
cursor:pointer;
background:#efefef;
}

.eff_tab_name.active{background:#fff}