html {
    width: 50%;
    height: 80%;
    margin: 0 auto;
    margin-top: 50px;
}
caption {
    font-size: 20px;
    line-height: 40px;
    font-family: sans-serif;
    font-style: italic;
}
table { 
    border-collapse: collapse; 
    font-family: Calibri, sans-serif; 
}
colgroup, tbody { 
    border: solid medium; 
}
td { 
    border: solid thin; 
    border-color: black;
    height: 40px; 
    width: 40px; 
    font-size: 30px;
    text-align: center; 
    padding: 0; 
}

table .a {
    background-color: #BDBDBD;
}

.taula {
    float: left;
}
.sudokus {
    //float: right;
    padding-top: 36px;
}
.options2 {
    clear: left; 
}

.button {  
    background-color: #82FA58;
    border: none;
    color: white;
    padding: 10px 32px;
    text-align: center;
    text-decoration: none;
    display: inline-block;
    font-size: 16px;
    margin: 4px 2px;
    cursor: pointer;
    -webkit-transition-duration: 0.4s; /* Safari */
    transition-duration: 0.4s;
}
.button1 {
    background-color: #4CAF50; 
    width: 182px;
}
.button2 {
    background-color: #8181F7; 
    padding: 15px 32px;
    width: 160px;
}
.button3 {
    background-color: #FE2E2E; 
    margin-top: 20px;
    padding: 15px 32px;
}
.button1:hover {
    box-shadow: 0 12px 16px 0 rgba(0,0,0,0.24),0 17px 50px 0 rgba(0,0,0,0.19);
}
.button2:hover {
    box-shadow: 0 12px 16px 0 rgba(0,0,0,0.24),0 17px 50px 0 rgba(0,0,0,0.19);
}
.button3:hover {
    box-shadow: 0 12px 16px 0 rgba(0,0,0,0.24),0 17px 50px 0 rgba(0,0,0,0.19);
}