<div class="select-wrap">
<select name="select" id="selectCustom" class="select-custom">
<option value="">1</option>
<option value="">2</option>
<option value="">3</option>
</select>
</div>.select-wrap{
width: 176px;
}
.choices__inner{
background-color: #fff;
border-radius: 10px;
padding-left: 15px;
}
.choices__list.choices__list--single{
margin-top: 7px;
font-size: 14px;
}
.choices__item--selectable{
font-size: 14px;
font-family: 'Open Sans';
font-weight: 400;
line-height: 19px;
}
.choices[data-type*=select-one]:after{
content: '';
background-image: url('arrow-b.svg');
width: 15px;
height: 15px;
background-repeat: no-repeat;
border-style: none;
margin-top: -7px;
}
.choices{
padding-right: 23px;
}
.choices__list.choices__list--dropdown{
border-radius: 10px;
border-top-left-radius: 0px;
border-top-right-radius: 0px;
}
.is-open .choices__inner{
border-radius: 10px;
/* border-bottom-left-radius: 0px;
border-bottom-right-radius: 0px; */
}<header class="header">
<div class="header__fon-nav"></div>
<div class="container">
<div class="header__wrap">
<div class="header__top-nav">
<nav class="top__nav">
<ul class="top__nav-list">
<a href="#" class="active"><li class="list__item act">Главная</li></a>
<a href="#"><li class="list__item">Внутренние номера IP- телефонии</li></a>
<a href="#"><li class="list__item">Документы по ГО и ЧС</li></a>
<a href="#"><li class="list__item">Научно-методические материалы</li></a>
<a href="#"><li class="list__item">Публикации в СМИ</li></a>
<a href="#"><li class="list__item">Информационные стенды</li></a>
</ul>
</nav>
</div>.header__block-dop-nav-inner-fon{
position: absolute;
width: 100%;
height: 350px;
background-color: rgba(0, 0, 0, 0.3);
left: 0;
top: 370px;
z-index: -1;
}
.header{
background-image: url('img/header-bg.jpg');
background-repeat: no-repeat;
background-position: top right;
background-size: cover;
position: relative;
z-index: 5;
}
.header__fon-nav{
background-color: rgba(0, 0, 0, 0.3);
height: 60px;
width: 100%;
position: absolute;
z-index: 10;
}
.top__nav{
z-index: 50;
position: relative;
}