body,
a,
button {
  margin: 0;
  padding: 0;
  font-size: 16px;
  color: #333333;
  font-family: 微软雅黑;
  font-weight: 400;
}
body {
  -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
  -webkit-focus-ring-color: rgba(0, 0, 0, 0) !important;
  /* background-color: #f2f2f2; */
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
body a:hover {
  color: #333;
}
* {
  font-family: 微软雅黑;
  word-wrap: break-word;
}
*:focus {
  outline: none !important;
}
/*reset*/
html,
body,
div,
h1,
h2,
h3,
h4,
h5,
h6,
p,
ol,
ul,
li,
footer,
header,
menu,
nav,
audio,
video,
button,
label,
select,
input,
option,
button {
  margin: 0;
  padding: 0;
}
/*select,*/
input,

/*option,*/
textarea {
  appearance: none;
  -moz-appearance: none;
  /* Firefox */
  -webkit-appearance: none;
  outline: none;
  background-color: rgba(0, 0, 0, 0);
}

option,
select {
  font-size: 16px;
}

button {
  border: 0;
  outline: none;
  background: transparent;
  cursor: pointer;
  -moz-appearance: none;
  /* Firefox */
  -webkit-appearance: none;
  font-size: 16px;
  font-family: Arial;
  font-weight: 400;
}

input {
  border-radius: 0;
  border: none;
  border: 0;
  outline: none;
}

img {
  display: block;
  object-fit: cover;
}
.clear {
  clear: both;
}

ul,
ol,
li {
  list-style-type: none;
  list-style-position: none;
  list-style-image: none;
  margin-bottom: 0;
}
/*整体部分*/
::-webkit-scrollbar {
  width: 12px;
  height: 10px;
}
/*滑动轨道*/
::-webkit-scrollbar-track {
  /* border-radius: 20px; */
  background: none;
}
/*滑块*/
::-webkit-scrollbar-thumb {
  border-radius: 10px;
  border: 2px solid rgba(255, 255, 255, 1);
  -webkit-box-shadow: inset 0 0 6px rgba(0, 0, 0, 0.2);
  background-color: rgba(130, 130, 130, 0.75);
}
/*滑块效果*/
::-webkit-scrollbar-thumb:hover {
  border-radius: 10px;
  -webkit-box-shadow: inset 0 0 6px rgba(0, 0, 0, 0.2);
  /* background-color: rgba(187,203,216, 0.4); */
  background-color: rgba(130, 130, 130, 1);
}
/* *::-webkit-scrollbar {
  display: none;
}
body::-webkit-scrollbar {
  display: block;
} */
a {
  text-decoration: none;
}

a:hover,
a:focus {
  text-decoration: none;
  outline: none;
}

* {
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing: border-box;
  scroll-behavior: smooth;
  word-break: break-word;
}
.container::-webkit-scrollbar {
  display: none;
}
h1,
h2,
h3,
h4,
h5,
h6 {
  font-size: 16px;
  font-weight: normal;
}
textarea {
  border: none;
  resize: none;
}
textarea::-webkit-input-placeholder,
input::-webkit-input-placeholder {
  color: #999;
}
textarea::-webkit-input-placeholder,
input:-moz-placeholder {
  color: #999;
}
textarea::-webkit-input-placeholder,
input::-moz-placeholder {
  color: #999;
}
textarea::-webkit-input-placeholder,
input:-ms-input-placeholder {
  color: #999;
}
div#sub-frame-error {
  display: none;
}
.t_o {
  white-space: nowrap;
  text-overflow: ellipsis;
  overflow: hidden;
  word-break: break-all;
}
.t_o2 {
  text-overflow: -o-ellipsis-lastline;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  line-clamp: 2;
  -webkit-box-orient: vertical;
  height: 38px;
}
.t_o3 {
  text-overflow: -o-ellipsis-lastline;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  line-clamp: 3;
  -webkit-box-orient: vertical;
}
.t_o6 {
  text-overflow: -o-ellipsis-lastline;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 6;
  line-clamp: 6;
  -webkit-box-orient: vertical;
}

@-webkit-keyframes bounceInDown {
  0%,
  60%,
  75%,
  90%,
  to {
    -webkit-animation-timing-function: cubic-bezier(0.215, 0.61, 0.355, 1);
    animation-timing-function: cubic-bezier(0.215, 0.61, 0.355, 1);
  }
  0% {
    opacity: 0;
    /* -webkit-transform: translate3d(0, -3000px, 0);
    transform: translate3d(0, -3000px, 0); */
  }
  60% {
    opacity: 1;
    -webkit-transform: translate3d(0, -25px, 0);
    transform: translate3d(0, -25px, 0);
  }
  75% {
    -webkit-transform: translate3d(0, -10px, 0);
    transform: translate3d(0, -10px, 0);
  }
  90% {
    -webkit-transform: translate3d(0, 0, 0);
    transform: translate3d(0, 0, 0);
  }
  to {
    -webkit-transform: none;
    transform: none;
  }
}
@keyframes bounceInDown {
  0%,
  60%,
  75%,
  90%,
  to {
    -webkit-animation-timing-function: cubic-bezier(0.215, 0.61, 0.355, 1);
    animation-timing-function: cubic-bezier(0.215, 0.61, 0.355, 1);
  }
  0% {
    opacity: 0;
    /* -webkit-transform: translate3d(0, -3000px, 0);
    transform: translate3d(0, -3000px, 0); */
  }
  60% {
    opacity: 1;
    -webkit-transform: translate3d(0, -25px, 0);
    transform: translate3d(0, -25px, 0);
  }
  75% {
    -webkit-transform: translate3d(0, -10px, 0);
    transform: translate3d(0, -10px, 0);
  }
  90% {
    -webkit-transform: translate3d(0, 0, 0);
    transform: translate3d(0, 0, 0);
  }
  to {
    -webkit-transform: none;
    transform: none;
  }
}
.bounceInDown {
  -webkit-animation-name: bounceInDown;
  animation-name: bounceInDown;
}
.detail_bottom_left img {
  min-width: 100%;
}
.study_left_body {
  margin-right: 40px;
}
.container {
  min-height: 84vh;
}
.rich_text ul,
.rich_text ol,
.rich_text li {
  list-style: inherit;
  }
.rich_text ol{
  list-style: decimal;
}
.rich_text img{
  max-width: 100%;
}

@media only screen and (max-width: 1280px) {
  .t_o2{
    height: 0.42rem;
  }
  
}
@media only screen and (max-width: 1080px) {
  .t_o2{
    height: auto !important;
  }
}