_style.css

html {
  background-color: #eeeeee;
}

body {
  font-family: "Noto Sans KR", sans-serif;
  background: #242526;

  overflow-x: hidden;
  margin: 0;
  padding: 0;
  height: 100vh;
  width: 100vw;
}

.container {
  float: left;
  width: 100%;
  height: 100%;
  color: #ecf0f1;
  display: none;
  flex-direction: column;
  justify-content: space-evenly;
}

.container.active {
  display: flex;
}

.wrapper {
  display: flex;
  justify-content: center;
}

.madeBy {
  position: fixed;
  bottom: 5px;
  display: flex;
}

.madeBy span,
.madeBy > span > a {
  font-size: 12px;
  color: #999999;
}

.textContainer {
  height: 43px;
  width: 100%;
  display: flex;
  justify-content: center;
}

.pageText {
  position: absolute;
  font-size: 32px;
  font-weight: bold;
  text-align: center;
  /* user-select: none; */
}

.pageText.hidden {
  opacity: 0;
  user-select: none;
}

.commentContainer {
  height: 32px;
  width: 100%;
  display: flex;
  justify-content: center;
  overflow: hidden;
}

.comment {
  position: absolute;
  font-size: 24px;
  opacity: 0.8;
}

.comment.hidden {
  opacity: 0;
  user-select: none;
}

.aTag {
  color: #ecf0f1;
  font-weight: bold;
  background: linear-gradient(to bottom, #e67e22 0%, #e67e22 100%);
  background-position: 0 100%;
  background-repeat: repeat-x;
  background-size: 4px 4px;
  text-decoration: none;
  transition: background-size 0.2s;
  cursor: pointer;
}

.aTag:hover {
  background-size: 4px 50px;
}

#homeBtn {
  position: absolute;
  top: 0;
  left: 0;
  display: flex;
  /*background-color: #2ecc71;*/
  color: #2ecc71;
  font-weight: bold;
  width: 80px;
  height: 80px;
  border-radius: 80px;
  justify-content: center;
  align-items: center;
  transition: 0.4s;
  cursor: pointer;
}

.btnContainer {
  display: flex;
  background: #3a3b3c;
  height: 60px;
  min-width: 60px;
  transition: width 2s linear;
  border: solid 10px #3a3b3c;
  border-radius: 40px;
}

.btnMenu {
  position: relative;
  display: flex;
  gap: 10px;

  -moz-transition: 1s;
  -ms-transition: 1s;
  -o-transition: 1s;
  -webkit-transition: 1s;
  transition: 1s;
}

.button {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  cursor: pointer;
  z-index: 1;
}
.buttonBg {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  z-index: -1;
  position: absolute;
  opacity: 0;
  transition: 0.3s;
}

.button:hover > .buttonBg {
  opacity: 0.7;
}

#btnBg {
  position: absolute;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  transition: margin, 0.4s;
  background-color: #3498db;
  opacity: 0;
  z-index: 0;
  /* transform: translateX(70px); */
}

.textInput {
  display: flex;
  border-radius: 60px;
  background-color: #242526;
}

.tInput > input {
  border: none;
  background: none;
  outline: none;
  float: left;
  padding: 10px 0px 10px 30px;
  height: 40px;
  width: 200px;
  color: #ecf0f1;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica,
    Arial, sans-serif;
  font-size: 24px;
}

#fileSelectBtn > .buttonBg {
  background-color: #f1c40f;
}

#cancelBtn > .buttonBg {
  background-color: #e74c3c;
}

#checkBtn > .buttonBg {
  background-color: #2ecc71;
}

#goHomeBtn > .buttonBg {
  background-color: #94969b;
}

#copyBtn > .buttonBg {
  background-color: #3498db;
}

#downloadBtn > .buttonBg {
  background-color: #2ecc71;
}

#uploadBtn > .buttonBg {
  background-color: #e67e22;
}

.goBackBtn > .buttonBg {
  background-color: #94969b;
}

#loginBtn > .buttonBg {
  background-color: #e67e22;
}

#inputBtn {
  background-color: #e67e22;
}

.appearVertical {
  animation: appearVertical 0.4s linear;
}

.disappearVertical {
  animation: disappearVertical 0.4s linear;
}

.appearHorizontal {
  animation: appearHorizontal 0.4s linear;
}

.disappearHorizontal {
  animation: disappearHorizontal 0.4s linear;
}
.appearBtnHorizontal {
  animation: appearBtnHorizontal 0.4s linear;
}

.disappearBtnHorizontal {
  animation: disappearBtnHorizontal 0.4s linear;
}

@keyframes appearVertical {
  0% {
    opacity: 0;
  }
  40% {
    opacity: 0;
    transform: translateY(-20px);
  }
  100% {
    opacity: 1;
    transform: translateY(0px);
  }
}

@keyframes disappearVertical {
  0% {
    opacity: 1;
    transform: translateY(0px);
  }
  40% {
    opacity: 0;
    transform: translateY(20px);
  }
  100% {
    opacity: 0;
  }
}

@keyframes appearHorizontal {
  0% {
    opacity: 0;
  }
  40% {
    opacity: 0;
    transform: translateX(40px);
  }
  100% {
    opacity: 1;
    transform: translateX(0px);
  }
}

@keyframes disappearHorizontal {
  0% {
    opacity: 1;
    transform: translateX(0px);
  }
  40% {
    opacity: 0;
    transform: translateX(-40px);
  }
  100% {
    opacity: 0;
  }
}

@keyframes appearBtnHorizontal {
  0% {
    opacity: 0;
    width: 0;
  }
  40% {
    opacity: 0;
    transform: translateX(40px);
  }
  100% {
    opacity: 1;
    transform: translateX(0px);
  }
}

@keyframes disappearBtnHorizontal {
  0% {
    opacity: 1;
    transform: translateX(0px);
  }
  40% {
    opacity: 0;
    transform: translateX(-40px);
  }
  100% {
    opacity: 0;
    width: 0;
  }
}