body {
  background: linear-gradient(to bottom, #222324 50%, #0253fe 100%);
  background-attachment: fixed;
}

#container { /* esto literal es el que contiene a todos las cajas */
  display: flex;
  justify-content: center;
  align-items: center;
  width: 800px;
  border: 3px solid #007bff;
  padding: 3px;
  margin: 256px auto;
  overflow: hidden;
  white-space: nowrap;
}

#box {
  width: 800px;
  background-color: transparent;
  border: 1px solid #007bff;
  overflow: hidden;
}

#header {
  font-size: 100%;
  font-family: Helvetica, Arial, sans-serif;
  font-style: italic;
  font-weight: 500;
  color: #FFFF00;
  background-image: linear-gradient(to top, #222324 50%, #0253fe 100%);
  margin: 0;
  padding: 4px 4px 4px 4px;
}

#side {
  float: left;
  width: 145px;
  padding: 0px 0px 5px 10px;
  overflow: hidden;
}

#main {
  float: right;
  width: 624px;
  overflow: hidden;
  padding: 0px 10px 5px 0px;
}

#footer {
  clear: both;
  font-size: 100%;
  font-family: Helvetica, Arial, sans-serif;
  font-style: italic;
  font-weight: 500;
  color: #FFFF00;
  background-image: linear-gradient(to top, #222324 50%, #0253fe 100%);

}

#lyrics {
  font-size: 100%;
  font-family: Helvetica, Arial, sans-serif;
  font-style: italic;
  font-weight: 500;
  color: #FFFF00;
}

#yuki {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-items: center;
  padding: 3px;
  margin: 256px auto;
  overflow: hidden;
  white-space: nowrap;
}

#yuki img {
  width: 128px;
  object-position: top;
}

#yuki h1 {
  font-size: 100%;
  font-family: Helvetica, Arial, sans-serif;
  font-style: italic;
  font-weight: 500;
  color: #FFFF00;
  margin: 0;
  padding: 4px 4px 4px 4px;
  text-align: center;

}


.sidebox {
  border: 1px solid #007bff;
  margin: 0px 0px 5px 0px;
}

.sidecontent {
  padding: 0px 0px 0px 0px;
  color: #007bff;
  font-size: 17px;
  letter-spacing: 1px;
  overflow: hidden;
}


.sidecontent img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.sidecontent ul, li{
  margin: 0px;
  list-style-type: none;
  padding-left: 0px;
}


.subheader {
  background-image: linear-gradient(to bottom, #222324 50%, #0253fe 100%);
  font-size: 100%;
  font-family: Helvetica, Arial, sans-serif;
  font-style: italic;
  font-weight: 500;
  color: #FFFF00;
  padding: 0px 0px 0px 4px;
}

.subheader h3{
  margin: 0px;
}

.mainboxes {
  border: 1px solid #007bff;
  padding: 0px;
  margin: 0px 0px 5px 0px;
}

.mainboxescontent{
  padding: 5px 15px 0px 15px;
  color: #007bff;
  font-size: 17px;
}

.slidecontent{
  position: relative;
  width: 100%;
  overflow: hidden;
  white-space: nowrap;
  background: #111;
  padding: 10px 0;
}

#notFoundText {

  font-size: 100%;
  font-family: Helvetica, Arial, sans-serif;
  font-style: italic;
  font-weight: 500;
  color: #FFFF00;
  padding: 0px 0px 0px 4px;
  
}


#animatedslidecontent{
  display: inline-block;
  padding-left: 100%;
  animation: ping-pong 6s linear infinite normal;
  padding: 5px 15px 0px 15px;
  color: #FFFF00;
  font-size: 17px;
  margin: 0px;
}

a {
  font-weight: 500;
  font-style: italic;
  font-family: Helvetica;
  text-decoration: none;
  color: yellow;
}

p{
  font-weight: 500;
  font-style: italic;
  font-family: Helvetica;
  color: yellow;
}

a:visited {
  color: yellow;
}

canvas {
  background: #eeeeee;
  display: block;
}

button{
  display: flex;
  float: left;
  width: 480px;
  height: 320px;
}


@keyframes ping-pong {
  0% {
    margin-left: -90%;
  }
  100% {
    margin-left: calc(90% + 10ch); 
  }
}