.baitap_home {
  padding-left: 10%;
  padding-right: 10%;
  color: white;
}

.baitap_content_in {
border: 1px solid grey;
width: 50%;
 margin:0 auto;
 margin-bottom: 2rem;
 min-width: 620px;
}

.cent {
  width: 100%;
  cursor: pointer;
  font-size: 25px;
  color: #198754;
}

.fule_up {
  width: 40%;
  height: 30px;
  margin: 20px;
  margin-top: -20px;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  font-size: 25px;
  color: darkblue;
  background: orange;
}

.baitap_head {
  background: green;
  text-align: center;
  padding: 0.25rem 0;
}

.cent_round {
  text-align: center;
  display: grid;
  grid-template-columns: repeat(2, calc(50% - 0.5rem));
  column-gap: 1rem;
  row-gap: 2rem;
  padding: 0 1rem;
}

.video_form {
  text-align: center;
  margin-bottom: 30px;
}

.phien_am {
  color: darkblue;
  font-size: 18px;
}

.video_name {
  color: darkblue;
  font-size: 25px;
}

.nghia {
  color: #264de1;
  font-size: 18px;
}
.btn-fixed {
  position: fixed;
  bottom: 1rem;
  width: 100%;
}
.group-btn-navigation {
  max-width: 1280px;
  margin: 0 auto;
  width: 100%;
}

.cent {
  border: 2px solid #198754;
  background-color: transparent;
  padding: 0.375rem 0.75rem;
  border-radius: 0.25rem;
  transition: background-color 0.3s ease, color 0.3s ease,
    border-color 0.3s ease;
}

.cent:hover {
  background-color: #198754;
  color: yellow;
  border-color: #198754;
  .phien_am {
    color: white;
  }
  .nghia {
    color: #b0ffff;
  }
}

.cent:focus {
  outline: none;
  box-shadow: 0 0 0 0.2rem rgba(40, 167, 69, 0.5);
}

.cent:active {
  background-color: #198754;
  color: #fff;
  border-color: #1e7e34;
}


/* New style */
.vocabularies-wrapper {
  width: 90%;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, calc(25% - 0.3rem));
  gap: 0.4rem;
}
.video-wrapper {
  width: 50%;
  margin: 0 auto;
}
.btn-group-word {
  width: 100%;
  height: 100%;
  min-height: 120px;
}
.audio-player {
  display: none;
}
.word-style {
  font-size: 28px;
  font-weight: 500;
}
.phonetic-style {
  font-size: 18px;
  color: darkblue;
}
.tran-style {
  font-size: 18px;
  color: blue;
}
.btn-outline-success:hover p:nth-of-type(1) {
  color: yellow; /* Thẻ đầu tiên đổi màu trắng */
}

.btn-outline-success:hover p:nth-of-type(2) {
  color: white; /* Thẻ thứ hai đổi màu vàng */
}

.btn-outline-success:hover p:nth-of-type(3) {
  color: #b0ffff; /* Thẻ thứ ba đổi màu đen */
}
p {
  margin-bottom: 0.5rem;
}
@media screen and (max-width: 768px) {
  .baitap_content_in{
    width:100%;
    min-width:375px;
  }
  .video-wrapper {
    width: 90%;
    margin: 0 auto;
  }
  .vocabularies-wrapper {
    grid-template-columns: repeat(2, calc(50% - 0.2rem));
    gap: 0.4rem;
  }
  .btn-group-word {
    min-height: 90px;
  }
}
@media (max-width:576px){
  #video-tabs .py-2{
    padding-top: 0 !important;
    padding-bottom:0 !important;
  }
  #video-tabs.nav-underline {
    --bs-nav-underline-gap: 0.25rem;
    }
  #video-tabs .nav-link {
    padding: 0.25rem 0.25rem !important;
    font-size:14px;
  }
  .container,
.baitap_home{
  padding-left:0;
  padding-right:0;
  --bs-gutter-x: 0rem !important;
}
.baitap_head h1{
  font-size: 20px;
}
h3 {
  font-size: 18px;
}
}