saas-one/frontend/operation-web/ext/modern/theme-material/sass/src/Button.scss

/* Floating Action Buttons
{
  xtype: 'button',
  ui: 'fab',
  bottom: 16,
  right: 16,
  iconCls: 'md-icon-add'
}*/
.#{$prefix}button-fab {
    .#{$prefix}inner-el {
        @include material-shadow(2);
        color: $accent-foreground-color;
        display: flex;
        width: 56px;
        height: 56px;
        background-color: $accent-color;
        align-items: center;
        justify-content: center;
        border-radius: 50%;
        transition: background-color 450ms cubic-bezier(0.23, 1, 0.32, 1);
    }

    .#{$prefix}ripple {
        background-color: $accent-foreground-color;
    }

    &.#{$prefix}hovered .#{$prefix}inner-el {
        background-color: $accent-pressed-color;
    }

    .#{$prefix}keyboard-mode &.#{$prefix}focused .#{$prefix}inner-el {
        background-color: $accent-pressed-color;
    }

    .#{$prefix}big & {
        .#{$prefix}inner-el {
            border-radius: 50%;
        }
    }

    .#{$prefix}icon-el {
        color: $accent-foreground-color;
    }

    &.#{$prefix}pressing {
        .#{$prefix}inner-el {
            @include material-shadow(3);
            .#{$prefix}icon-el {
                color: $accent-foreground-color;
            }
            background-color: $accent-pressed-color;
        }
    }
}

.#{$prefix}docked-top {
    .#{$prefix}has-badge .#{$prefix}badge-el {
        top: -8px;
    }
}

.#{$prefix}has-badge {
    .#{$prefix}badge-el {

        white-space: nowrap;
        text-overflow: ellipsis;
        text-align: center;
        display: block;
        overflow: hidden;

        @include material-shadow(1);
    }
}