.banner_cst{
    background: url("../img/first.jpg");
    background-position: center;
    height: 720px;
    width: 100%;
    background-repeat: no-repeat;
    display: flex;
    /* border: 1px solid; */
}
.container_cst{
    width: 80%;
    display: contents;
}
.dropdown-menu.menu.show{
    display: block;
    /*transform: translate3d(300px, 1662px, 0px); !important;*/
}

.box:hover{
    box-shadow: 0 0 14px 1px #bbbbbb;
    /* transform: scale(1.01); */
}
.center {
    width: 180px;
    height: 60px;
    position: relative;
}
.slider-wd{
    max-width: 1000px;
}
button:focus{
    outline-offset: 0px;
    outline: -webkit-focus-ring-color auto 0px;
}
.btn_1 {
    width: 180px;
    height: 60px;
    cursor: pointer;
    background: transparent;
    border: 1px solid #91C9FF;
    outline: none;
    transition: 1s ease-in-out;
}

svg {
    position: absolute;
    left: 0;
    top: 0;
    fill: none;
    stroke: #fff;
    stroke-dasharray: 150 480;
    stroke-dashoffset: 150;
    transition: 1s ease-in-out;
}

.btn_1:hover {
    transition: 1s ease-in-out;
    background: #1e6add;
}

.btn_1:hover svg {
    stroke-dashoffset: -480;
}

.btn_1 span {
    color: white;
    font-size: 18px;
    font-weight: 100;
}
.btn_cst{
    display: flex;
    justify-content: center;
}
.a_cst{
    position: absolute;
    bottom: 0;
    padding-bottom: 45px;
}
ul li a span{font-size: 18px;}
.foto_insper{
    background: url("../img/insper2.jpg");
    height: 400px;
    background-size: cover;
    background-repeat: no-repeat;
    background-position: center;
}
.text_about{
    display: table;
    justify-content: center;
}
.text_about p{
    margin-top: 20%;
    /* margin-block-start: 0; */
    /* margin-block-end: 0; */
    /* margin-top:0; */
    /* margin-bottom: 0; */
    position: relative;
    font-size: 21px;
    /* display: contents; */
    text-align: center;
}
.text_contact{
    font-size: 19px;
    text-decoration-line: underline;
}

.zagolovok{
    margin: 0;
    padding-top: 10px;
    /* padding-bottom: 10px; */
}
.card-body{
    transition: 0.5s;
}
.adap{
    height: 140px;
}
.card_cst{
    height: 318px;
}
.card_ekp{
    height: 227px;
}

.form_lk{
    padding-top: 10px;
    padding-bottom: 10px;
}
.was-validated{
padding: 15px;
}
.menu{
    width: 50%;
}
.dropdowner{
    display: flex;
    justify-content: center;
}
.btn_cst{
    height: 40px;
}
.link_news{background-color: transparent;border: none;color: black;}
.link_news:hover {background-color: transparent;color: black;text-decoration: underline;}
.btn_news{padding-top: 14px;}

.card_news:hover{
    box-shadow: 0 0 14px 1px #bbbbbb;
}
.text_news{
    width: 80%;
}
.text_news p{
    font-size: 17px;
    font-family: tahoma;
    letter-spacing: 1px;
}
.text_lk{display: flex;justify-content: center;}
.text_lk p{color: #28a745;font-size: 17px;}
@media (max-width: 576px) {
    .foto_insper{
        height: 200px;
    }
    .menu{
        display: none;
        width: 100%;
    }
    .dropdown-menu.menu.show{
        display: block;
    }
    .dropdown-menu.show{
        display: contents;
    }
    .text_about p{
        /* display: contents; */
        text-align: center;
        font-size: 18px;
    }
    .text_lk p{
        font-size: 15px;
        text-align: center;
    }
    .adap{
        height: 200px;
    }
    .adapt2{
        padding-top: 10px;
    }
    .navbar-text{
        padding: 8px 18px;
    }

}

@media (max-width: 768px) {
    .ifr{
        height: 600px;
    }
    .text_about p{
        top: 0%;
    }
    .dropdown-menu.menu.show{
        display: block; 
    }
    .dropdown-menu.show{
        display: contents;
    }
    .adap{
        height: 200px;
    }
    .adapt2{
        padding-top: 10px;
    }
    .navbar-text{
        padding: 8px 18px;
    }
    }