/* Layout */
.bk4y-wrap{
  max-width: 820px;           /* narrow column like Elfsight */
  margin: 32px auto 56px;
  padding: 0 16px;
}

/* Title */
.bk4y-title{
  font-size: 26px;
  line-height: 1.25;
  text-align: center;
  font-weight: 700;
  margin: 8px 0 18px;
}

/* Card shell */
.bk4y-card{
  background:#fff;
  border-radius:16px;
  box-shadow:0 12px 28px rgba(0,0,0,.10);
  border:1px solid rgba(0,0,0,.06);
  overflow:hidden;            /* rounds iframe corners */
  position:relative;
}

/* Sunflower accent bar */
.bk4y-card::before{
  content:"";
  display:block;
  height:4px;
  background:#f5c542;         /* adjust to your brand yellow */
}

/* Iframe */
.bk4y-iframe{
  display:block;
  width:100%;
  min-height:820px;           /* bump if you see inner scrollbars */
  border:0;
}

/* Mobile */
@media (max-width:640px){
  .bk4y-title{font-size:22px}
  .bk4y-iframe{min-height:1040px}
}