body{
    background-color: dimgray;
}
#pong{
    border: 2px solid #FFF;
    position: absolute;
    margin :auto;
    top:0;
    right:0;
    left:0;
    bottom:0;
}

/*For start button*/
@import url("https://fonts.googleapis.com/css?family=Raleway:400,400i,700");
.frame {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 400px;
  height: 400px;
  margin-top: -200px;
  margin-left: -200px;
  border-radius: 2px;
  box-shadow: 4px 8px 16px 0 rgba(0, 0, 0, 0.1);
  overflow: hidden;
  background: #ffa114;
  color: white;
  font-family: Raleway, Helvetica, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  display: flex;
  justify-content: center;
  align-items: center;
}
.button {
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}
.button svg {
  height: 55px;
  width: 150px;
  fill: none;
  stroke-width: 5;
}
.button svg .o1 {
  stroke: rgba(255, 179, 65, 0.7);
  fill: #ffa114;
  transition: all 1s ease-in-out;
}
.button svg .o2 {
  stroke: white;
  stroke-dasharray: 20 420;
  stroke-dashoffset: 20;
  transition: all 1s ease-in-out;
}
.button span {
  position: absolute;
  margin: auto 0;
  text-transform: uppercase;
  letter-spacing: 3px;
}
.button:hover .o1 {
  fill: rgba(204, 129, 16, 0.3);
}
.button:hover .o2 {
  stroke-dashoffset: -420;
}