.custom_block_btn,
.acf-block-preview .custom_block_btn{
    color : #6b6b6b !important;
    background-color : #bce8b4;
    border: 3px solid #bce8b4;
    border-radius : 2px;
}
.custom_block_btn:hover{
    color : #6b6b6b !important;
    background-color : #ffffff;
    border-color: #bce8b4;
}

@media only screen and (max-width: 500px){

}