:root {
    --color1: #05b1b1;
    --color2: #52339a;
}

section {
    padding: 100px 0;
}

header {
    padding: 200px 0;
}

header,
footer {
    background: var(--color1);
    background: url(../img/pattern.png),
        linear-gradient(90deg, var(--color1) 0%, var(--color2) 100%);
    background-size: contain;
}

.itd_play {
    background-color: var(--color1);
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    margin: 30px auto;
    transition: all 0.2s ease;
}

.itd_play:hover {
    background-color: var(--color2);
}

.itd__triangle {
    margin-right: -6px;
    width: 0;
    height: 0;
    border-style: solid;
    border-width: 10px 0 10px 20px;
    border-color: transparent transparent transparent var(--bs-white);
}

.btn-itd {
    display: block;
    max-width: 200px;
    margin: 0 auto;
    padding: 8px 30px;
    color: var(--bs-white);
    background-color: var(--color2);
}

.btn-itd:hover {
    background-color: var(--color1);
}

.embed-container {
    position: relative;
    padding-bottom: 56.25%;
    height: 0;
    overflow: hidden;
    max-width: 100%;
}

.embed-container {
    position: relative;
    padding-bottom: 56.25%;
    height: 0;
    overflow: hidden;
    max-width: 100%;
}

.embed-container iframe,
.embed-container object,
.embed-container embed {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

/* Цвет */

.color1 {
    color: var(--color1);
}

.color2 {
    color: var(--color2);
}

.bg1 {
    background-color: var(--color1);
}

.bg2 {
    background-color: var(--color2);
}

.about,
.shedule,
.autor,
.buy {
    background-color: #dfdfdf;
}

.about i {
    font-size: 25px;
    color: var(--color2);
}

.itd_circle {
    margin: 0 auto 15px;
    width: 70px;
    height: 70px;
    border: 3px solid var(--color2);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
}

.line {
    width: 100px;
    height: 3px;
    background-color: var(--color1);
    margin: 15px auto 30px;
}

.forwhom h5 {
    padding: 50px;
    border: 3px solid var(--color1);
}

.btn {
    margin-top: 50px;
}

.accordion-button:not(.collapsed) {
    color: var(--bs-black);
    background-color: var(--bs-white);
}

.learning h5 {
    padding: 25px;
    border: 3px solid var(--color1);
}

.autor {
    padding-bottom: 0;
}

.itd_img {
    max-width: 260px;
}

.rounded {
    border-radius: 50% !important;
    border: 3px solid var(--color1);
}

.row {
    --bs-gutter-x: 0;
}

footer {
    padding: 30px 0;
}

.rowPadding {
    padding: 6px;
}