#container{
    width: 100%;
    height: 500px;
    font-size: 18px;
    overflow: hidden;
    background-color: rgb(255, 255, 255);
}

#containerColor{
    font-size: 25px;
    text-align: center;

}


#ColorRGB{
    justify-content: center;
    margin: auto;
}

 #red{
     background-color: rgb(255, 0, 0);
     float: left;
     width: 33%;
 }

 #green{
    background-color: rgb(0, 255, 0);
    float: left;
     width: 34%;
 }

  #blue{
     background-color: rgb(0, 0, 255);
    float: right;
     width: 33%;
 }

 h3, h1{
     text-align: center;
 }

 #btns{
     text-align: center;
     margin-bottom: 10px;
 }

 .minus{
     border-radius: 20px;
 }

 .plus{
     border-radius: 23px;
 }

 .reset{
     border-radius: 12px;
 }