.lerro{
    display: flex;
    margin-top: 20px;
    margin-bottom: auto;
    align-items: flex-start;
    /*height: 900px;*/
}

.column {
    float: left;
    width: 40%;
    padding: 10px;
    display: flex;
    text-align: center;
    align-items: center;
    flex-direction: column;
}

.column canvas {
    margin-left: 0px;
}

.column-r {
    float: left;
    width: 60%;
    display: flex;
    justify-content: center;
    text-align: center;
}

.column-r form{
    width: 100%;
}

/* Clear floats after the columns */
.lerro:after {
    content: "";
    display: table;
    clear: both;
}

/* Responsive layout - makes the two columns stack on top of each other instead of next to each other */
@media screen and (max-width: 600px) {
    .lerro{
        display: flex;
        flex-direction: column;
    }
    .column {
        width: 100%;
    }
    }

.form-style{
    margin-left: 0;
    padding-left: 0;
}

.form-style li{
    padding-top: 20px;
    padding-bottom: 20px;
    margin-left: 0;
    list-style: none;
}

.form-style label{
    padding-right: 30px;
    display: inline-block;
    width: 140px;
    text-align: right;
}

.form-style input,
.form-style select{
    height: 60px;
    font-size: 30px;
}

.btn-div{
    text-align: center;
}
  
.btn-div button{
    height: 80px;
    width: 90%;
    
    border-radius: 10px;
    border: none;
    font-size: 20px;
    color: white;
}

.btn-div:hover button{
    cursor: pointer;
    color: rgb(255, 255, 255);
}

#ekuazioaBtn{
    background-color: rgb(75, 75, 75);
}

#ekuazioaBtn:hover{
    background-color: rgb(125, 22, 22);
}

#soluzioaBtn{
    background-color: rgb(75, 75, 75);
}

#soluzioaBtn:hover{
    background-color: rgb(22, 87, 125);
}

.btn-div ul{
    display: inline-flex;
}

.btn-div li{
    list-style: none;
}

#ekuazioak ul{
    display: flex;
    align-items: center;
}

#ekuazioak li{
    padding-left: 10px;
}

#ekuazioak input{
    text-align: center;
}

#gehitu{
    height: 60px;
    width: 100px;
    border-radius: 5%;    
    border-style: none;
    background-color: rgb(225, 176, 15);      
}

#gehitu:hover{
    background-color: rgb(158, 63, 12);
    cursor: pointer;
    color: white;
    border-style: none;
}

.gbtn{
    height: 60px;
    width: 100px;
    border-radius: 5%;    
    border-style: none;
    background-color: rgb(225, 176, 15);      
}

.gbtn:hover{
    background-color: rgb(158, 63, 12);
    cursor: pointer;
    color: white;
    border-style: none;
}

/* Botoi txurie ta beltza */

#b11, #b12, #b21, #b22 {
    height: 60px;
    width: 60px;
    border-radius: 50%;    
    border-style: none;
    background-color: rgb(217, 217, 217);
}

#b11:hover, #b12:hover, #b21:hover, #b22:hover {
    background-color: rgb(0, 0, 0);
    cursor: pointer;
    color: white;
    border-style: none;
}

#t11, #t12, #t21, #t22 {
    height: 60px;
    width: 60px;
    border-radius: 50%;    
    background-color: rgb(255, 255, 255);
    border: 4px solid rgb(217, 217, 217); 
}

#t11:hover, #t12:hover, #t21:hover, #t22:hover {
    background-color: rgb(255, 255, 255);
    border: 4px solid black;     
    cursor: pointer;
    color: white;
}

/* Tarteen botoiak */

#tarteak1 {
    width: 100%;
}

#tarteak1 li{
    display: inline-flex;
}

#tarteak1 button{
    height: 60px;
    width: 540px;
    border-radius: 5%;    
    border-style: none;
    background-color: rgb(177, 91, 85);
    font-size: 20px;
}

#tarteak1 button:hover{
    cursor: pointer;  
    border-style: none;
    background-color: rgb(92, 207, 98); 
}

#tarteak2 {
    width: 100%;
}

#tarteak2 li{
    display: inline-flex;
}

#tarteak2 button{
    height: 60px;
    width: 540px;
    border-radius: 5%;    
    border-style: none;
    background-color: rgb(177, 91, 85);
    font-size: 20px;
}

#tarteak2 button:hover{
    cursor: pointer;  
    border-style: none;
    background-color: rgb(92, 207, 98); 
}

/* dokumentuko gauzak*/

.titulua {
    text-align: center;
    font-family: 'Courier New', Courier, monospace;
    font-size: 10px;
}

.zakarrontzia button{
    height: 80px;
    width: 300px;
    border-radius: 5%;    
    border-style: none;
    background-color: rgb(186, 49, 49);
    color: white;
    font-size: 20px;
}

.zakarrontzia:hover button{
    background-color: black;
    cursor: pointer;
    color: white;
    border-style: none;

}


#soluzioa {
    width: 100%;
}

#soluzioa li{
    display: inline-flex;
}

#soluzioa button{
    height: 60px;
    width: 540px;
    border-radius: 5%;    
    border-style: none;
    background-color: rgb(177, 91, 85);
    font-size: 20px;
}

#soluzioa button:hover{
    cursor: pointer;  
    border-style: none;
    background-color: rgb(92, 207, 98); 
}

button {
    width: 200px;
    height: 60px;
    background-color: rgb(31, 27, 21);
    border: none;
    color: rgb(169, 169, 198);
    cursor: pointer;
    position: relative;
}


button::before{
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 0;
    background-color: rgba(255, 119, 0, 0.321);
    
}

button:hover::before{
    height: 100%; 
    clip-path:circle(18%);
    animation: rot 1s linear both infinite;    
} 


@keyframes rot{
    from {
      clip-path: polygon(50% 50%, 0% 0%, 0% 0%);
    }
    25% {
      clip-path: polygon(50% 50%, 0% 0%, 100% 0%);
    }
    25.000001% {
      clip-path: polygon(50% 50%, 0% 0%, 100% 0%, 100% 0%);
    }
    50%{
      clip-path: polygon(50% 50%, 0% 0%, 100% 0%, 100% 100%);
    }
    50.000001%{
      clip-path: polygon(50% 50%, 0% 0%, 100% 0%, 100% 100%, 100% 100%);
    }
    75%{
      clip-path: polygon(50% 50%, 0% 0%, 100% 0%, 100% 100%, 0% 100%);
    }
    75.000001%{
      clip-path: polygon(50% 50%, 0% 0%, 100% 0%, 100% 100%, 0% 100%, 0% 100%);
    }
    to{
      clip-path: polygon(50% 50%, 0% 0%, 100% 0%, 100% 100%, 0% 100%, 0% 0%);
    }
  }

/*https://codepen.io/liuxiaole-the-sasster/pen/Zdrmxg*/