h1 {
    font-size: 1.8rem;
}

h2 {
    font-size: 1.5rem;
}

h3 {
    font-size: 1.2rem;
    //color: #A02D2D;
}

h4 {
    font-size: 1.0rem;
}


aa {
    font-size: 1.0rem;
    padding: 0px;
}

a.ex1 {
  padding-left: 20px;
}

.center {
  margin: auto;
  text-align: center;
  width: 60%;
  padding: 5px;
}


.left {
  margin: auto;
  text-align: left;
  width: 60%;
  padding: 0px;
}


.grid-container {
    display: grid;
    grid-template-columns: 160px 160px;
    grid-gap: 0px;
    width: 60%;
}

.grid-container1 {
    display: grid;
    grid-template-columns: auto auto;
    grid-gap: 50px;
    align-items: center;
    justify-content: center;
}

textarea { 
    border-style: none; 
    border-color: Transparent; 
    overflow: auto;        
    font-size: 1.0rem;
  }
  
pre { 
    margin: 0px;
    font-size: 0.8rem;
  }  
  
.box_img {
    background: #FFFFFF;
    border-color: #FFFFFF;
    color: #000000;
    margin-left: 10px;
    margin-right: 10px;
    text-align: center;
}
  
  
img {
  border: 0px solid #ddd;
  border-radius: 4px;
  padding: 5px;
  width: 300px;
}

.grid-child {
    text-align: center;   
}

a.noimglink {
    text-decoration: none;
}