.o-materials {
  display: grid;
  gap: 50px 40px;
  width: 100%;
  margin-bottom: 50px;
}

@media screen and (min-width: 1600px) {
  .o-materials {
    grid-template-columns: repeat(4, 1fr);
  }

  .o-materials__item:nth-child(1),
  .o-materials__item:nth-child(2) {
    grid-column: span 2;
  }
}

@media screen and (min-width: 1024px) and (max-width: 1599px) {
  .o-materials {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media screen and (min-width: 577px) and (max-width: 1023px) {
  .o-materials {
    grid-template-columns: repeat(2, 1fr);
  }

  .o-materials__item:nth-child(1),
  .o-materials__item:nth-child(2) {
    grid-column: 1 / -1;
  }
}

@media screen and (max-width: 576px) {
  .o-materials {
    grid-template-columns: 1fr;
    margin-bottom: 30px;
  }
}

.o-materials-card{
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 15px;
}
.o-materials-card__content{
  display: flex;
  flex-direction: column;
  gap: 15px;
}
.o-materials-card .sticker {
  z-index: 1;
  position: absolute;
  top: 15px;
  left: 15px;
}
.o-materials-card__title{
  display: block;
  margin-bottom: 10px;
  font-weight: 700;
  color: #000;
  font-size: 22px;
  line-height: 1;
  transition: 0.2s ease-in-out;
}
.o-materials-card__title:hover {
  color: #B12535;
  text-decoration: none;
}
.o-materials-card__desc{
  font-size: 14px;
  font-weight: 400;
  line-height: 1.29;
}
.o-materials-card__img-wrap{
  position: relative;
  height: 340px;
}
.o-materials-card__img{
  display: block;
  max-width: 100%;
  width: 100%;
  height: 100%;
  transition: .4s ease-in-out;
  object-fit: cover;
}

.o-materials-card__stocks {
  display: flex;
  justify-content: flex-start;
  align-items: center;
}
.o-materials-card__stocks-text {
  margin-right: 15px;
  display: block;
  font-size: 14px;
  font-weight: 400;
  line-height: 1.29;
  color: #7d858c;
}
.o-materials-card__stocks-text--date {
  padding-left: 25px;
  position: relative;
  color: #B12535;
}
.o-materials-card__stocks-text--date::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 15px;
  height: 15px;
  background-image: url(../img/academy-calendar.svg);
  background-position: center center;
  background-repeat: no-repeat;
  background-size: 15px;
}

@media screen and (max-width: 1599px) {
  .o-materials {
    gap: 50px 30px;
  }
}
@media screen and (max-width: 1023px) {
  .o-materials-card__content{
    padding: 0 20px;
  }
}