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

.bg-black{
    background-color: black;
}
.item-center{
    text-align: center;

}
.display{
    width: 280px;
    height: 60px;
    font-size: 200%;
    border-radius: 30px;
    background-color: rgb(190, 190, 190);
    margin: 10px;
    border: 1px solid white;
}
.line{
    height: 2px;
}
.buttons{
    width: 50px;
    height: 50px;
    margin: 10px;
    font-size: 200%;
    border: 1px solid rgb(255, 255, 255);
    border-radius: 25px;
    background-color: rgb(60, 60, 60);
    color: white;
    cursor: pointer;
}
.buttons:hover{
    border-color: black;
}
.spec{
    background-color: rgb(210, 210, 210);
    color: black;
}
.oper{
    background-color: rgb(252, 191, 23);
}
.equals{
    width: 120px;
    /* margin: px 10px; */
    /* padding:0px; */
}