.navbar-darks {
    background: rgb(83, 152, 255);
    /* background: rgb(33, 7, 77); */
    -webkit-box-shadow: 0px 4px 5px 0px rgba(0,0,0,0.5);
    -moz-box-shadow: 0px 4px 5px 0px rgba(0,0,0,0.5);
    box-shadow: 0px 4px 5px 0px rgba(0,0,0,0.5);
}
.nav-color {
    color: rgb(68, 149, 255);
}
body {
    overflow-x: hidden;
}
.logo {
    background: white;
    padding-left: 10px;
    padding-right: 50px;
}
.main-section {
    height: calc(100vh - 50px);
    width: 100%;
    position: relative;
    top: -160px;
    /* position: absolute; */
    /* top: 50px; */
    background: rgb(83, 152, 255);
}
.color {
    color: white !important;
    transition: .3s;
}
.color:hover {
    color: rgb(202, 202, 202) !important;
}
.navbar {
    z-index: 90;
}
.main-section h1 {
    margin-top: 160px;
    max-width: 80%;
    padding: 20px;
    line-height: 55px;
    color: white;
}
.main-section p {
    margin-left: 20px;
    color: white;
    position: relative;
    z-index: 2;
}
.main-section h1 span {
    background: rgb(255, 255, 255);
    border-radius: 20px;
    padding: 10px;
}
.button {
    padding: 15px;
    background: rgb(49, 115, 255);
    width: 300px;
    text-align: center;
    font-weight: bold;
    color: whitesmoke;
    border-top-left-radius: 20px;
    border-bottom-right-radius: 20px;
    margin: auto;
    position: relative;
    top: 200px;
    transition: .1s;
    cursor: pointer;
}
.button:hover {
    color: rgb(36, 36, 36);
    background: rgb(139, 211, 255);
}
.circle {
    width: 500px;
    height: 500px;
    background: white;
    border-radius: 50%;
    position: absolute;
    right: -180px;
    top: -180px;
    z-index: 1;
}
.text {
    position: relative;
    top: 140px;
}
.about_us {
    margin-top: 0;
    position: relative;
    padding: 100px;
    top: -160px;
    height: calc(auto -160px);
    background: rgb(210, 241, 255);
}
.about_us h2 {
    text-align: center;
    padding: 20px;
}
.about-block {
    width: 290px;
    padding: 20px;
    padding-left: 10px;
    padding-right: 10px;
    /* margin-bottom: 70px; */
    /* background: rgb(101, 199, 255); */
    background: rgb(83, 152, 255);
    color: white;
    border-radius: 20px;
    display: inline-block;
    /* margin-right: 20px; */
    margin: 5px;
}
.about-block h5 {
    text-align: center;
    margin-bottom: 20px;
}
.about-block p {
    /* width: 280px; */
    text-align: center;
}
.bloks {
    margin: auto;
}
.why {
    color: black;
}
.why span {
    padding: 5px 10px 5px 10px;
    background: black;
    color: white;
    border-radius: 10px;
}
.you-tube {
    background: rgb(83, 152, 255);
    z-index: 10;
    position: relative;
    top: -160px;
    height: 500px;
    /* background: rgb(114, 170, 255); */
}
.tac {
    text-align: center;
}
.white {
    color: white;
    padding-top: 15px;
}
.you-tube iframe {
    display: block;
    margin: auto;
    margin-top: 30px;
    border: 2px solid white;
}
.authblock {
    max-width: 450px;
    /* height: 400px; */
    background: rgb(83, 152, 255);
    margin: auto;
    margin-top: 120px;
    padding: 40px;
    border-radius: 20px;
}
.authblock form input {
    display: block;
    margin: auto;
    margin-bottom: 10px;
    width: 350px;
    padding: 0 10px 0 10px;
}
form input[type="submit"] {
    width: 250px;
    background: rgb(108, 189, 255);
    border: 1px solid white;
    color: white;
    padding: 10px;
    border-radius: 20px;
    padding-top: 3px;
    padding-bottom: 3px;
    transition: .2s;
}
form input[type="submit"]:hover {
    width: 250px;
    background: rgb(72, 173, 255);
    border: 1px solid white;
    color: white;
    padding: 10px;
    border-radius: 20px;
    padding-top: 3px;
    padding-bottom: 3px;
}
.captcha {
    margin: auto;
    margin-top: 10px;
    margin-bottom: 10px;
}
@media screen and (max-width: 960px) {
    .circle{ 
        display: none;
    }
    .text h1 {
        font-size: 30px;
        margin-top: 20px;
        line-height: 30px;
        max-width: 100%;
    }
    .main-section {
        height: 70vh;
    }
    .about_us {
        padding: 0;
        padding-bottom: 50px;
    }
    .you-tube iframe {
        width: 100%;
    }
    .form input {
        width: 100%;
    }
    .authblock{
        padding: 0;
        padding-bottom: 10px;
    }
}
.authblock form input {
    display: block;
    margin: auto;
    margin-bottom: 10px;
    width: 250px;
    padding: 0 10px 0 10px;
    border-radius: 15px;
}