:root {
  --primary: #111;
  --secondary: #fd0;
}
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
body {
  font-family: sans-serif;
  background-color: var(--secondary);
}
.select-box {
  position: relative;
  width: 26rem;
  margin: 7rem auto;
}
.select-box input {
  width: 100%;
  padding: 1rem 0.6rem;
  font-size: 1.1rem;
  border: 0.1rem solid transparent;
  outline: 0;
}
input[type="tel"] {
  border-radius: 0 0.5rem 0.5rem 0;
}
.select-box input:focus {
  border: 0.1rem solid var(--primary);
}
.selected-option {
  background-color: #eee;
  border-radius: 0.5rem;
  overflow: hidden;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.selected-option div {
  position: relative;
  width: 6rem;
  padding: 0 2.8rem 0 0.5rem;
  text-align: center;
  cursor: pointer;
}
.selected-option div::after {
  position: absolute;
  content: "";
  right: 0.8rem;
  top: 50%;
  transform: translateY(-50%) rotate(45deg);
  width: 0.8rem;
  height: 0.8rem;
  border-right: 0.12rem solid var(--primary);
  border-bottom: 0.12rem solid var(--primary);
  transition: 0.2s;
}
.selected-option div.active::after {
  transform: translateY(-50%) rotate(225deg);
}
.select-box .options {
  position: absolute;
  top: 4rem;
  width: 100%;
  background-color: #fff;
  border-radius: 0.5rem;
  display: none;
}
.select-box .options.active {
  display: block;
}
.select-box .options::before {
  position: absolute;
  content: "";
  left: 1rem;
  top: -1.2rem;
  width: 0;
  height: 0;
  border: 0.6rem solid transparent;
  border-bottom-color: var(--primary);
}
input.search-box {
  color: #fff;
}
.select-box ol {
  list-style: none;
  max-height: 23rem;
  overflow: overlay;
}
.select-box ol::-webkit-scrollbar {
  width: 0.6rem;
}
.select-box ol::-webkit-scrollbar-thumb {
  width: 0.4rem;
  height: 3rem;
  background-color: #ccc;
  border-radius: 0.4rem;
}
.select-box ol li {
  padding: 1rem;
  display: flex;
  justify-content: space-between;
  cursor: pointer;
}
.select-box ol li.hide {
  display: none;
}
.select-box ol li:not(:last-child) {
  border-bottom: 0.1rem solid #eee;
}
.select-box ol li:hover {
  background-color: #e0ffff;
}
.select-box ol li .country-name {
  margin-left: 0.4rem;
}