.nav {
  text-align: center;
  margin: 13px 0;
  font-size: 18px;
}


.center-round-img {
  display: block;
  margin: 20px auto;
  border-radius: 20px;
  width: 200px;
  box-shadow: 0 0 13px pink;
  border: 2px dashed #ffb6c1;

}

* {
  box-sizing: border-box;
}

body::before {
  content: "";
  position: fixed;
  top: 0; left: 0; right: 0; bottom:0;
  background: rgba(255, 192, 203, 0.25);
  z-index: -1;
}
  

body {
  background-size: auto;
  background-repeat: no-repeat;
  background-attachment: fixed;
  background-position: center top;
  background-color: #fff0f8;
  font-family: Arial, Helvetica, sans-serif;
  color: #ff1275;
  margin: 0px;
  padding: 20px;
  background-image: url('background.jpg');
  cursor: url('https://cur.cursors-4u.net/anime/ani-12/ani1104.cur');
  }

a {
  color: #ff69b4;
  text-decoration: none;
  font-weight: bold;
}

a:hover {
  color:  #ffb6c1;
  text-decoration: underline;
}

  
  .header-img {
    border: 1px solid black;
    width: 100%;
    height: auto;
    object-fit: cover;
    display: block;
    border-radius: 13px;
    box-shadow: 0 0 20px #ffb6c1;
  }
  
  .main-layout {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    max-width: 1200px;
    margin: auto;
    padding-top: 20px;
    margin-top: -9px;
    gap: 20px;
  }
  

.content-box {
  background-color: #fffdfd;
  border: 1px solid black;
  padding: 20px;
  max-width: 400px;
  margin: 0 auto;
  border-radius: 13px;
  box-shadow: none;
}

.sidebar-right ul {
  width: 200px;
  max-height: 400px;
  overflow-y: auto;
  margin: 0;
  background-color: transparent;
  padding: 0px;
  border-radius: 13px;
  border: 1px solid black;
  box-shadow: none;
  list-style-type: none;
  color: #ff69b4;
  padding-left: 0;
  list-style: none;
}

.sidebar-right li{
  background: transparent;
  border: 1.3px dashed #ffb6c1;
  border-radius: 30px;
  padding: 9px 13px;
  margin-bottom: 8px;
  color: #ff1275;
  font-weight: bold;
  text-align: center;
  box-shadow: 0 0 5px #ffb6c1;
  transition: background-color 0.3s ease;
  cursor: pointer;
}

.sidebar-right ul li:hover {
  background-color: #ffccf9;
  color: #ff69b4;
}

.page-frame {
  max-width:800px;
  margin: auto;
  padding: 20px;
}

.sidebar-left {
  border-radius: 13px;
  flex: 0 0 200px;
  align-self: flex-start;
  position: sticky;
  top: 100px;
  left: 20px;
  width: 200px;
  max-height: 70vh;
  overflow-y: auto;
  background-color: #fff;
}


.sidebar-left {
  left: 20px;
}

.sidebar-right {
  right: 20px;
}

.sidebar-left {
  background-image: url("Unknown-40.jpg");
  display: block;
  background-color: #fff;
  border: 1px solid black;
  text-align: center;
  padding: 9px;
  margin-bottom: 8px;
  font-weight: bold;
  border-radius: 13px;
  color: #ff69b4;
  text-decoration: none;
  box-shadow: none;
}

.sidebar-left li {
  background: transparent;
  border: 1.3px dashed #ffb6c1;
  border-radius: 13px;
  display: block;
  padding: 9px 13px;
  margin-bottom: 8px;
  margin: 9px auto;
  color: #ff1275;
  font-weight: bold;
  text-align: center;
  box-shadow: 0 0 5px #ffb6c1;
  transition: background-color 0.3s ease;
  cursor: pointer;
}

 .sidebar-left a:hover {
   background: #ffccf9;
 }

.content-area {
  flex: 1;
}

.sidebar-right ul {
  text-align: center;
  list-style: none;
  padding: 0;
  padding-left: 0;
  margin: 0;
}
 
 .sidebar-right ul li{
   list-style-type: none;
}
.sidebar-left ul {
  list-style-type: none;
  text-align: center;
  margin: 0;
  padding: 0;
  align-self: flex-start;
}

.content-box-404 {
  width: 600px;
  background-color: #fffdfd;
  background-image: url('Unknown-44.jpg');
  padding: 30px;
  margin: 60px auto;
  border: 1px solid black;
  border-radius: 13px;
  text-align: center;
  align-self: flex-start;
  display: block;
  box-shadow: 0 0 9px pink;
  color: #ff1275;
}

.error-img {
  display: block;
  margin: 20px auto;
  border: 2.5px dashed pink;
  border-radius: 13px;
  box-shadow: 0 0 9px pink;
  width: 190px;
  height: auto;
  
}

.sidebar-left-block {
  display: flex;
  align-items: stretch;
  flex-direction: column;
  gap: 13px;
  flex: 0 0 200px;
  border-radius: 13px;
}

.sidebar-left-content-box {
  width: 200px;
  background-color: #fffdfd;
  border: 1px solid black;
  border-radius: 13px;
  padding: 13px;
  color: #ff69b4;
  font-weight: bold;
  text-align: center;
  box-shadow: 0 0 9px #ffb6c1;
}

.myungjae-img {
  width: 100%;
  margin: 0 auto;
  height: auto;
  display: block;
  border: none;
  box-shadow: none;
  border-radius: 13px;
}

.sidebar-right-content-box {
  margin: auto;
  width: 200px;
  background-color: #fffdfd;
  padding: 13px;
  border: 1px solid black;
  box-shadow: 0 0 9px #ffb6c1;
  border-radius: 13px;
  color: #ff69b4;
  font-weight: bold;
  text-align: center;
}

.sidebar-right-block {
  display: flex;
  align-items: stretch;
  flex-direction: column;
  gap: 13px;
  flex: 0 0 100px;
  background-color: #fff;
}

.calendar-img {
  width: 100%;
  margin: 0 auto;
  height: auto;
  display: block;
  border: none;
  box-shadow: none;
  border-radius: 13px;
}