.b-container iframe{
display: block;
  width: 100% !important;   /* перекрываем width="853" */
  height: auto;             /* вместе с aspect-ratio даст нужную высоту */
  aspect-ratio: 16 / 9;     /* держим пропорцию */
  border: 0;
  max-width: 100%;

}

.tizer-block {
    margin: 0 auto 0;
    padding-right: 15px;
    padding-left: 15px;
    text-align: center;
    background-color: #f6f4f0;
    border-top: 1px solid #bac7d2;
    /* opacity: 0; */
}
.tizer-block.animate {
    -webkit-animation-name: showContent, contentPosition3;
    animation-name: showContent, contentPosition3;
    -webkit-animation-duration: 0.5s;
    animation-duration: 0.5s;
    -webkit-animation-timing-function: linear;
    animation-timing-function: linear;
    -webkit-animation-delay: 0.5s;
    animation-delay: 0.5s;
    -webkit-animation-iteration-count: 1;
    animation-iteration-count: 1;
    -webkit-animation-fill-mode: forwards;
    animation-fill-mode: forwards;
}
.tizer-block--fix {
    width: 100%;
}
.tizer-block--fix .dzm-nav{
    padding: 50px 0;
    border: 0;
    background: transparent;
}
.tizer-block__row {
    margin-right: -15px;
    margin-left: -15px;
}
.tizer-block__col {
    max-width: 100%;
    padding: 16px 8px;
    display: -webkit-box;
    display: -ms-flexbox;
    display: -webkit-flex;
    display: flex;
    max-width: 100%;
    -ms-flex-preferred-size: 0;
    -webkit-flex-basis: 0;
    flex-basis: 0;
    -webkit-box-flex: 1;
    -ms-flex-positive: 1;
    -webkit-flex-grow: 1;
    flex-grow: 1;
    -ms-flex-wrap: wrap;
    -webkit-flex-wrap: wrap;
    flex-wrap: wrap;
    -webkit-box-pack: justify;
    -ms-flex-pack: justify;
    -webkit-justify-content: space-between;
    justify-content: space-between;
}
.tizer-block__banner {
    display: inline-block;
    -webkit-box-sizing: content-box;
    box-sizing: content-box;
    max-width: 380px;
    height: 365px;
    margin: 8px;
    -webkit-box-flex: 1;
    -ms-flex-positive: 1;
    -webkit-flex-grow: 1;
    flex-grow: 1;
    -ms-flex-negative: 1;
    -webkit-flex-shrink: 1;
    flex-shrink: 1;
}
.tizer-block__banner:empty
{
    display: none;
}


a.b-link.b-link--mosmed {
    width: 40px;
    height: auto;
    margin-right: 10px;
    padding-top: 2px;
}

@media screen and (max-width: 1600px) {
    a.b-link.b-link--mosmed {
        width: 35px;
    }
}

@media screen and (max-width: 1440px) {
    a.b-link.b-link--mosmed {
        width: 32px;
    }
}

@media screen and (max-width: 1280px) {
    .tizer-block__banner {
        height: 321px;
    }
}

@media screen and (max-width: 1024px) {
    a.b-link.b-link--mosmed {
        width: 22px;
    }
}

@media screen and (max-width: 1180px) {
    .tizer-block__banner {
        height: 304px;
    }
}
@media screen and (max-width: 1134px) {
    .tizer-block__banner {
        height: 310px;
    }
}
@media screen and (max-width: 1024px) {
    .tizer-block__banner {
        height: 332px;
    }
    .tizer-block__banner:last-child {
        display: none;
    }
    a.b-link.b-link--mosmed {
        width: 70px;
    }
}
@media screen and (max-width: 850px) {
    .tizer-block__banner {
        height: 315px;
    }
}
@media screen and (max-width: 768px) {
    .tizer-block__banner {
        height: 284px;
    }
}
@media screen and (max-width: 759px) {
    .tizer-block__banner {
        min-width: 235px;
        height: 355px;
    }
    .tizer-block__banner:last-child {
        display: block;
    }
}
@media screen and (max-width: 630px) {
    .tizer-block__banner {
        height: 320px;
    }
    a.b-link.b-link--mosmed {
        width: 55px;
    }
}
@media screen and (max-width: 540px) {
    .tizer-block__banner {
        height: 294px;
    }
    a.b-link.b-link--mosmed {
        width: 49px;
    }
}
@media screen and (max-width: 534px) {
    .tizer-block__col {
        -webkit-box-pack: center;
        -webkit-justify-content: center;
        -ms-flex-pack: center;
        justify-content: center;
    }
    .tizer-block__banner:last-child {
        display: none;
    }
    .tizer-block__banner {
        height: 340px;
        min-width: 245px;
    }
}
@media screen and (max-width: 517px) {
    .tizer-block__banner {
        height: 350px;
    }
}
@media screen and (max-width: 460px) {
    a.b-link.b-link--mosmed {
        width: 40px;
    }
}
@media screen and (max-width: 425px) {
    a.b-link.b-link--mosmed {
        width: 38px;
    }
}
@media screen and (max-width: 375px) {
    a.b-link.b-link--mosmed {
        width: 32px;
    }
}
@media screen and (max-width: 320px) {
    .tizer-block__col {
        padding: 16px 8px;
    }
    .tizer-block__banner {
        height: 314px;
    }
    a.b-link.b-link--mosmed {
        width: 28px;
    }
}