label.checkbox-inline,
label.checkbox { 
    color: #000000; 
    text-align: center;
    vertical-align: middle;
    font-size: 18px;
    word-wrap: break-word;
    background-color: #b7ec9e87; 
    border-color: #FFFFFF;
    border-radius: 20px;
    cursor: pointer;
    width: 200px;
    height: 100px; 
    margin-right: 20px;
    margin-bottom: 30px;
    padding: 2px;
    /* added bits */
    font-weight:500;
    display: inline-flex;
    -webkit-box-pack: center;
    -moz-box-pack: center;
    -ms-flex-pack: center;
    -webkit-justify-content: center;
    justify-content: center;
    align-items:center;
  } 

label.checkbox-inline.checked,
label.checkbox.checked {
    background-color:#5cc04f;
    color:#fff!important;
    text-shadow:#000 1px 1px 2px!important
}
input[type="checkbox"] {
    display: none;
    
}

p {
    text-align: center;
}

div#box {
    display: inline;
}

div#box::after, div#box::before {
    box-sizing: content-box;
}


@media(max-width:991px){
    label.checkbox{
         margin-right:0px;
    }
}
@media(max-width:800px){
    label.checkbox{
        height:110px;
        width:150px;
        font-size:14px;
        font-weight:700;
    }
}
@media(max-width:400px){
    label.checkbox{
        height:110px;
        width:180px;
        font-size:14px;
        font-weight:700;
        margin-left:20%;
    }
}
@media(max-width:350px){
    label.checkbox{
        height:110px;
        width:100%;
        font-size:14px;
        font-weight:700;
        margin-left:0;
    }
}

input[type=checkbox], input[type=radio] {
    box-sizing: border-box;
    padding: 0;
    -webkit-appearance: none;
    -moz-appearance: none;
    -ms-appearance: none;
    -o-appearance: none;
    appearance: none;
}