Solution 2: CSS Hack
.dce-step-elementor-button.elementor-button-next:after {
content:'Next';
color:white;
}
.dce-step-elementor-button.elementor-button-previous:after {
content:'Previous';
color:white;
}
.dce-step-elementor-button.elementor-button-previous {
margin-left:0px;
}
selector.elementor-button.elementor-size-md {
font-size: 14px;
padding: 10px 15px !important;
-webkit-border-radius: 4px;
border-radius: 4px;
color:yellow !important;
background:red !important;
min-height:0 !important;;
}