* {
  box-sizing: border-box;
}

body {
  margin: 0;
  line-height: 1.3;
  font-family: 'Arial';
}

.flex-container {
  background-color: rgb(193, 219, 243);
  display: -webkit-flex;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
}

.flex-containerNopBai {
  display: -webkit-flex;
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: space-between;
}

.flex-container>div {
  background-color: rgb(193, 219, 243);
  margin: 1px;
  padding: 1px;
}

.topnav {
  font-weight: bold;
  overflow: hidden;
  background-color: #ff0505;
}

.topnav a {
  display: inline-block;
  color: #fff;
  padding: 14px;
  text-decoration: none;
  font-size: 18px;
}

.topnav a:hover {
  transition: all 1s;
  font-weight: 700;
  color: #fff;
  background-color: #404040;
}

.topnav a.active {
  font-weight: 700;
  color: #fff;
  background-color: #404040;
}

.topnav .icon {
  display: none;
}

@media screen and (max-width: 600px) {
  .topnav a:not(:first-child) {
    display: none;
  }

  .topnav a.icon {
    float: right;
    display: block;
  }

  a.icon {
    color: #fff;
    background-color: #404040;
  }

  .item1 {
    -webkit-order: -1;
    order: -1;
  }

  .item2 {
    -webkit-order: 2;
    order: 2;
  }

  .item3 {
    -webkit-order: 1;
    order: 1;
  }

  #id_banner {
    display: none;
  }
}

.centerDK {
  display: block;
  margin-left: auto;
  margin-right: auto;
  width: 70%;
  border: 3px solid #f8c6f0;
  border-radius: 10px;
}

@media screen and (max-width: 600px) {
  .topnav.responsive {
    position: relative;
  }

  .topnav.responsive a.icon {
    position: absolute;
    right: 0;
    top: 0;
  }

  .topnav.responsive a {
    float: none;
    display: block;
    text-align: left;
  }

  #iframe_id {
    width: 100%;
    height: 500px;
  }

  .centerDK {
    width: 100%;
  }
}

@media screen and (min-width: 600px) {
  #iframe_id {
    width: 70%;
    height: 500px;
  }

  .flex-container {
    display: none;
  }
}

.responsive {
  width: 100%;
  height: auto;
}

table {
  border-collapse: collapse;
  border-spacing: 0;
  width: 100%;
  border: 1px solid #ddd;
}

th,
td {
  text-align: left;
  padding: 16px;
  border: 1px solid #ddd;
}

tr:nth-child(even) {
  background-color: #f2f2f2;
}

.centerCK {
  display: block;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: 15px;
  /* width: 50%; */
  /* border: 5px solid #f7a1a1; */
}

#main_section {
  font-size: 14px;
}

#main_section .main_section_title {
  font-weight: 700;
  font-size: 2rem;
}

#main_section .main_section_subtitle {
  font-weight: 600;
  font-size: 1.5rem;
  color: #404040;
  text-indent: 1%;
}

#main_section .paragraph {
  text-indent: 2%;
  font-size: 20px;
  text-align: justify;
}

#main_section ul.circle {
  font-size: 20px;
  list-style-type: circle;
}

#main_section ul.a li {
  margin: 8px 0 8px 10px;
}

#main_section>.flex-containerNopBai>.flex-item-left {
  width: 46%;
}

.flex-containerLienHe {
  display: -webkit-flex;
  /* Safari */
  display: flex;
  /* Standard syntax */
  flex-wrap: wrap;
  justify-content: space-between;
}

#main_section>.flex-containerLienHe>.flex-item-left>div {
  width: 46%;
}

.tg {
  border-collapse: collapse;
  border-spacing: 0;
}

.tg td {
  border-color: black;
  border-style: solid;
  border-width: 1px;
  font-family: Arial, sans-serif;
  font-size: 14px;
  overflow: hidden;
  padding: 10px 5px;
  word-break: normal;
}

.tg th {
  border-color: black;
  border-style: solid;
  border-width: 1px;
  font-family: Arial, sans-serif;
  font-size: 14px;
  font-weight: normal;
  overflow: hidden;
  padding: 10px 5px;
  word-break: normal;
}

.tg .tg-0pky {
  border-color: inherit;
  text-align: left;
  vertical-align: top;
}

/*=============================================================*/

footer {
  margin: 32px;
}

.ribbon {
  font-size: 18px !important;
  width: 93%;

  position: relative;
  background: #ff0505;
  color: #fff;
  text-align: center;
  padding: 0.5em 0.5em;
  margin: 1em auto 1em;
}

.ribbon:before,
.ribbon:after {
  content: "";
  position: absolute;
  display: block;
  bottom: -1em;
  border: 1em solid #fabfbf;
  z-index: -1;
}

.ribbon:before {
  left: -2em;
  border-right-width: 2em;
  border-left-color: transparent;
}

.ribbon:after {
  right: -2em;
  border-left-width: 2em;
  border-right-color: transparent;
}

.ribbon .ribbon-content:before,
.ribbon .ribbon-content:after {
  content: "";
  position: absolute;
  display: block;
  border-style: solid;
  border-color: #ff0505 transparent transparent transparent;
  bottom: -1em;
}

.ribbon .ribbon-content:before {
  left: 0;
  border-width: 1em 0 0 1em;
}

.ribbon .ribbon-content:after {
  right: 0;
  border-width: 1em 1em 0 0;
}

.dethi-button {
  text-align: center;
  color: white;
  background-color: black;
  padding: 20px;
  border: none;
  border-radius: 8px;
}

.dethi-button:hover {
  transition: 0.5s;
  color: black;
  background-color: white;
  border: black dashed 1px;
}

.dethi-button:disabled {
  transition: 0.5s;
  color: black;
  background-color: gray;
  border: gray 1px;
}